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Honda · Known Issues

2003 Honda Pilot Problems: 14 Known Issues

2003 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2003 Honda Pilot has 14 documented known issues, with 2 rated critical. The most serious are Automatic Transmission 2nd-Gear Overheating and Torque Converter Failure ($1,800-$4,500 repair) and Ignition Switch Internal Wear Causes Intermittent Stall or No-Start ($250-$700 repair). Across all issues with published estimates, repair costs range from $20 to $4,500. DIY maintenance guides at au7o.io.

In This Article

  • Pilot Electrical2
  • Pilot Transmission1
  • Pilot Drivetrain2
  • Pilot Cooling1
  • Pilot Suspension1
  • Pilot Brakes1
  • Pilot Safety/Recalls1
  • Pilot Emissions1
  • Pilot Body/Panels1
  • Pilot HVAC1
  • Pilot Exhaust1
  • Pilot Interior1
  • Recalls14
  • FAQ
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In This Article

  • Electrical2
  • Transmission1
  • Drivetrain2
  • Cooling1
  • Suspension1

All 14 Known Issues

NHTSA Recalls14 recalls

STRUCTURE:BODY:HOOD

Honda (American Honda Motor Co.) is recalling certain 2019 Passport, 2016-2019 Pilot, and 2017-2020 Ridgeline vehicles. The hood latch striker may become damaged and separate from the hood, which can result in the hood opening while driving.

Campaign #21V93200029/11/2021

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX, RLX, TLX, 2019-2022 Honda Insight, Passport, 2020 Honda CR-V Hybrid, 2018-2019 Honda Clarity PHEV, Fit, and 2015-2020 Honda Accord Hybrid, Pilot, Acura NSX vehicles. The fuel pump inside the fuel tank may fail.

Campaign #23V85800018/12/2023

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 2019-2021 Passport, 2018-2026 Odyssey, 2019-2022 Insight, 2019-2021 HR-V, 2018-2020 Fit, 2020-2022 CR-V Hybrid, 2017-2022 CR-V, 2017-2018, 2021 Civic Type R, 2017-2021 Civic hatchback, 2016-2020 Civic coupe, 2016-2022 Civic, 2017-2022 Accord Hybrid, and 2016-2022 Accord vehicles. The front passenger seat weight sensor may crack and short circuit, which can cause the air bags to deploy unintentionally during a crash.

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Honda Civic74Honda CR-V64Honda Accord62Honda Odyssey25Honda HR-V24Honda Passport21

Frequently Asked Questions

What are the most common Honda Pilot problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2003 Honda Pilot has 14 documented issues. The most frequently reported are: Automatic Transmission 2nd-Gear Overheating and Torque Converter Failure, Ignition Switch Internal Wear Causes Intermittent Stall or No-Start, Radiator End Tank Cracking and Coolant Leaks Lead to Overheating. Of these, 2 are rated critical and should be addressed promptly.

Is the Honda Pilot reliable?

The 2003 Honda Pilot has 14 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: Automatic Transmission 2nd-Gear Overheating and Torque Converter Failure and Ignition Switch Internal Wear Causes Intermittent Stall or No-Start. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Honda Pilot problems?

Repair costs for known Honda Pilot issues range from $20 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Automatic Transmission 2nd-Gear Overheating and Torque Converter Failure, typically costs $1,800-$4,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2003-2004 Honda Pilot Automatic Transmission 2nd-Gear Overheating and Torque Converter Failure?

Early first-generation Pilot models share a well-documented 5-speed automatic transmission weakness with other Honda/Acura trucks of the era. Honda issued a safety recall to install an oil jet intended to improve lubrication/cooling of second gear because inadequate lubrication c… Repairs typically run $1,800-$4,500. Severity: high.

What is the 2003-2004 Honda Pilot Ignition Switch Internal Wear Causes Intermittent Stall or No-Start?

Early Honda Pilot models had a documented ignition switch failure where internal electrical contacts wear or overheat, interrupting power to the engine management and accessory circuits. Owners report the vehicle stalling while driving, dash lights flickering, or the engine crank… Repairs typically run $250-$700. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

Brakes
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    ALL YEARS20252024202320222021202020192018201720162015201420132012201120102009200820072006200520042003

    When Issues Typically Appear

    Front Brake Rotor Warping and Brake Judder Under Moderate Braking
    30K-120K
    Water Intrusion Through Roof Seams or Sunroof Drains Causing Wet Headliner and Electrical Problems
    50K-200K
    Ignition Switch Internal Wear Causes Intermittent Stall or No-Start
    60K-180K
    Power Steering Pump and O-Ring Air Ingestion Causing Whine, Foamy Fluid, and Hard Steering
    60K-180K
    Automatic Transmission 2nd-Gear Overheating and Torque Converter Failure
    70K-160K
    Front Seat Belt Buckle Switch Failure Triggers Airbag Warning Light
    70K-180K
    Front and Rear Wheel Bearing Failure Causes Humming Noise and ABS/VSA Faults
    70K-180K
    Front Suspension Compliance Bushing and Lower Control Arm Wear Causing Clunks and Tire Wear
    80K-180K
    Tailgate/Rear Hatch Wiring Harness Breaks Causing Inoperative Rear Lights, Lock, or Glass Release
    80K-200K
    Radiator End Tank Cracking and Coolant Leaks Lead to Overheating
    90K-180K
    050K100K150K200K mi

    On the 2003-2004 Honda Pilot, early Honda Pilot models had a documented ignition switch failure where internal electrical contacts wear or overheat, interrupting power to the engine management and accessory circuits. Owners report the vehicle stalling while driving, dash lights flickering, or the engine cranking but not starting. This problem was serious enough to trigger a safety recall and appears repeatedly in owner complaints.

    This issue also affects: Honda Accord, Honda Civic, Honda Prelude

    Common Symptoms

    • engine stalls while driving
    • intermittent no-start
    • dash lights flicker or go out
    • key turns but vehicle will not start
    • accessories lose power unexpectedly

    How to Fix

    Diagnosis usually involves checking for loss of ignition-switched power during a stall/no-start event and verifying recall completion history by VIN. The proper repair is replacement of the ignition switch electrical portion with the updated part and inspection of the connector for heat damage. If symptoms persist, technicians also inspect related main relay and battery/ground connections.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Honda 35130-S9V-A01 ignition switch assembly
      OEMHonda 35130-S9V-A01

      conditional electrical-switch replacement after testing proves loss of ignition-switched power through the switch Fitment/availability: 2003-2004 U.S. Honda Pilot EX, EX-L and LX with KA or KL 5AT; this is not the 12V-573 interlock-recal…

      HondaPartsNow

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$250 - $700

    Research This Issue

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    Community Reported
    High Confidence

    On the 2003-2008 Honda Pilot, on first-generation Pilots, repeated opening and closing of the rear hatch can fatigue and break wires inside the hatch harness near the hinge or rubber boot. Owners report intermittent or failed rear license plate lights, rear wiper, rear glass release, power lock, or tailgate-related electrical functions. The issue is typically caused by copper conductors fracturing inside intact-looking insulation.

    Common Symptoms

    • rear hatch will not unlock
    • rear glass release inoperative
    • rear wiper not working
    • license plate lights out
    • intermittent tailgate electrical functions

    How to Fix

    Inspect the hatch harness where it flexes at the top of the liftgate, peeling back the rubber boot and tug-testing each wire. Repair involves soldering in new wire sections or replacing the damaged harness, then sealing the repair to prevent moisture intrusion. Because multiple circuits can fail at once, continuity testing each affected wire is usually faster than replacing individual components.

    Typical repair cost:$150 - $700

    Research This Issue

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    Medium Confidence

    On the 2003-2004 Honda Pilot 3.5L V6, early first-generation Pilot models share a well-documented 5-speed automatic transmission weakness with other Honda/Acura trucks of the era. Honda issued a safety recall to install an oil jet intended to improve lubrication/cooling of second gear because inadequate lubrication could lead to gear overheating, discoloration, breakage, and eventual transmission failure or lockup. Owners commonly report slipping, harsh shifting, flashing D4, burnt fluid, and complete loss of drive, sometimes even after the recall if damage had already begun.

    This issue also affects: Acura CL, Acura ILX, Acura MDX

    Common Symptoms

    • slipping on acceleration
    • harsh or delayed shifts
    • flashing D4 light
    • burnt transmission fluid smell
    • loss of drive
    • shudder during shifting
    • transmission overheating

    How to Fix

    Verify whether the recall was completed and inspect for signs of overheated or contaminated ATF, delayed engagement, and shift flare. Scan the transmission control system for ratio and pressure-related codes, road test for slipping or flare on the 1-2 and 2-3 shifts, and inspect line pressure if needed. Mild cases may improve temporarily with repeated drain-and-fill using the correct Honda ATF, but many units ultimately require rebuild or replacement if second gear or the torque converter is damaged.

    Owner tips & cautions

    • TipIf the D4 light flashes or shifts become erratic, stop driving until fluid condition and transmission operation are checked; continued driving can rapidly turn a repairable issue into a full rebuild.
    • TipOwners often shorten ATF service intervals to roughly 25k-30k miles on early Pilots, especially if towing or driving in hot climates.
    Typical repair cost:$1,800 - $4,500

    Research This Issue

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    Community Reported
    High Confidence

    On the 2003-2011 Honda Pilot 3.5L V6, a very common Honda V6-era issue is power steering pump noise caused by suction-side air intrusion, often from a hardened inlet O-ring or aging pump seals. Owners report a cold-start groan or whining noise, visible bubbles in the reservoir, intermittent heavy steering, and fluid seepage around the pump. If ignored, the pump can wear out and steering assist may become inconsistent, especially in cold weather or parking maneuvers.

    This issue also affects: Honda Accord, Honda Odyssey, Acura RDX

    Common Symptoms

    • whining or groaning when turning
    • foamy power steering fluid
    • hard steering when cold
    • fluid seepage near pump
    • noise at idle
    • intermittent loss of steering assist

    How to Fix

    Inspect the reservoir for foamy fluid and check the pump inlet O-ring, hoses, and pump body for leaks or seepage. Replacing the inlet O-ring is a low-cost first step and often cures the noise if caught early; otherwise the pump may need replacement and the system should be bled thoroughly with the correct Honda-compatible fluid. Also inspect the return hose and reservoir screen if noise persists after pump service.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Honda 91345-RDA-A01 pump-inlet O-ring
      OEMHonda 91345-RDA-A01

      2003-2008 first repair when cold-start whine and foamy fluid prove suction-side air at the inlet joint Fitment/availability: 2003-2008 U.S. Honda Pilot 3.5L, all cataloged trims/drivetrains; 13.0 x 1.9 mm inlet-connector gasket.

      HondaPartsNow
    • Genuine Honda 91345-R70-P01 pump-inlet O-ring
      OEMHonda 91345-R70-P01

      For 2009, verify VIN against 91345-R70-A11 because the catalog changes at this bound

      HondaPartsNow
    • Genuine Honda power steering fluid, 12-ounce bottle
      OEMHonda 08285-P99-0CZA3 / 08206-9002

      specified service fluid for topping up and bleeding after the O-ring or other hydraulic repair Fitment/availability: Honda hydraulic power-steering systems; current listing 08285-P99-0CZA3 states it is the new number equivalent to 08206-…

      Honda Parts Connection

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Owner tips & cautions

    • TipIf the fluid looks foamy after startup, replace the inlet O-ring before condemning the whole pump; many owners fix the noise with this inexpensive repair.
    • TipUse only Honda-compatible power steering fluid, since generic ATF or universal fluids often worsen noise and seal issues on these systems.
    Typical repair cost:$20 - $700

    Research This Issue

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    Community Reported
    High Confidence

    On the 2003-2013 Honda Pilot, wheel bearing wear is a widely reported Pilot problem across both generations, often showing up as a growling or humming noise that changes with road speed and steering input. On some vehicles, excessive bearing play or damage to the integrated wheel speed sensor tone ring can also trigger ABS or VSA warnings. Heavier curb weight and age appear to contribute to repeat bearing replacements on higher-mileage vehicles.

    Common Symptoms

    • humming or growling noise that increases with speed
    • noise changes when turning left or right
    • ABS light on
    • VSA light on
    • wheel play or roughness

    How to Fix

    Road-test to isolate the noisy corner, then confirm with chassis ears or by checking for roughness/play with the wheel unloaded. Repair requires replacing the affected hub/bearing assembly or pressed-in bearing depending on axle position and generation, followed by alignment checks if suspension components were disturbed. If ABS/VSA lights are on, inspect the wheel speed sensor and tone ring during bearing service.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Timken 510011 front wheel bearing
      OEMTimken 510011

      2003-2004 front press-in bearing branch Fitment/availability: 2003-2004 U.S. Honda Pilot AWD, front left or right; exact Timken 510011.

      PartsGeek
    • Genuine Honda 44300-S3V-A11 front wheel bearing
      OEMHonda 44300-S3V-A11

      2005-2008 front press-in bearing branch Fitment/availability: 2005-2008 U.S. Honda Pilot, front left or right, listed 2WD/AWD trims with KA 5AT; quantity one per corner.

      HondaPartsNow
    • SKF FW145 rear wheel bearing
      OEMSKF FW145

      2003-2008 rear bearing branch, preserving the existing tagged eBay product link Fitment/availability: 2003-2008 U.S. Honda Pilot, rear left or right; SKF FW145 cross-references Honda 42200-S3V-A01.

      eBay
    • Genuine Honda 44300-STX-A01 front hub and bearing assembly
      OEMHonda 44300-STX-A01

      2009-2013 front hub branch Fitment/availability: 2009-2013 U.S. Honda Pilot, front left or right, 2WD or 4WD with KA 5AT; quantity one per corner.

      HondaPartsNow
    • Genuine Honda 42200-SZB-A01 rear hub and bearing assembly
      OEMHonda 42200-SZB-A01

      2009-2013 FWD rear hub branch Fitment/availability: 2009-2013 U.S. Honda Pilot 2WD/FWD, rear left or right with KA 5AT; not AWD.

      HondaPartsNow
    • Genuine Honda 42200-STX-A02 rear hub and bearing assembly
      OEMHonda 42200-STX-A02

      2009-2013 AWD rear hub branch Fitment/availability: 2009-2013 U.S. Honda Pilot 4WD/AWD, rear left or right with KA 5AT; not FWD.

      HondaPartsNow

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$350 - $900

    Research This Issue

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    Community Reported
    High Confidence

    On the 2003-2008 Honda Pilot, first-generation Pilots commonly develop coolant leaks from the plastic radiator end tanks or crimp seams as the radiator ages. Owners often notice a sweet smell, coolant residue on the radiator side tanks, or a gradual drop in coolant level before an overheating event. If ignored, the leak can worsen quickly and cause engine overheating, especially in hot weather or stop-and-go driving.

    This issue also affects: Honda Civic, Honda CR-V

    Common Symptoms

    • coolant smell from front of vehicle
    • low coolant reservoir level
    • visible coolant leak near radiator tank seam
    • engine temperature rises in traffic
    • steam from front grille area

    How to Fix

    Pressure-test the cooling system when cold and hot, inspect the radiator side tanks and upper seam for seepage, and verify the cooling fans operate correctly. The standard repair is radiator replacement, usually along with fresh coolant and often new upper/lower hoses and radiator cap if aged. Any overheating incident should be followed by checks for head gasket damage and cooling system air pockets.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Denso 221-3232 OE-style radiator
      OEMDenso 221-3232

      2003-2005 radiator branch after pressure testing locates an end-tank, crimp-seam or core leak Fitment/availability: 2003-2005 U.S. Honda Pilot 3.5L V6 with automatic transmission; exact Denso 221-3232 with transmission oil cooler.

      PartsGeek
    • Denso 221-3226 OE-style radiator
      OEMDenso 221-3226

      2006-2008 radiator branch after pressure testing locates an end-tank, crimp-seam or core leak Fitment/availability: 2006-2008 U.S. Honda Pilot 3.5L V6 with automatic transmission; exact Denso 221-3226 with transmission oil cooler.

      PartsGeek

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$400 - $900

    Research This Issue

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    Community Reported
    Medium Confidence

    On the 2003-2008 Honda Pilot 3.5L V6, first-generation Pilots commonly develop worn front compliance bushings and lower control arm bushings, leading to clunking over bumps, vague steering feel, braking instability, and uneven front tire wear. This is widely reported by owners and independent shops because the heavy front end and age-related rubber deterioration accelerate bushing failure. In many cases, the bushing tears or separates enough that the arm shifts under braking or when hitting potholes.

    This issue also affects: Honda Accord, Honda Odyssey, Acura RDX

    Common Symptoms

    • clunking over bumps
    • wandering steering
    • uneven front tire wear
    • pulling during braking
    • front-end looseness
    • thump when accelerating or stopping

    How to Fix

    Inspect the front lower control arm rear compliance bushings for cracking, fluid leakage (if hydraulic style), or separation, and check ball joints and sway bar links at the same time. Most shops replace the complete control arm assembly rather than pressing bushings only, followed by a four-wheel alignment. If tire wear has already started, replacing worn tires after alignment may be necessary to restore ride quality.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Mevotech GS60105 front left lower control arm and ball-joint assembly
      OEMMevotech GS60105

      Confirm VIN/chassis and included locking hardware before installation.

      PartsGeek
    • Mevotech CMS60106 front right lower control arm and ball-joint assembly
      OEMMevotech CMS60106

      Confirm VIN/chassis and included

      PartsGeek

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Owner tips & cautions

    • TipReplace both sides together and get an alignment immediately afterward; replacing only one worn arm often leaves the vehicle pulling or wearing tires unevenly.
    • TipHave the sway bar links and front struts checked at the same visit because they can create similar noises and are often worn at the same mileage.
    Typical repair cost:$500 - $1,200

    Research This Issue

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    Community Reported
    High Confidence

    On the 2003-2013 Honda Pilot 3.5L V6, brake pulsation from front rotor thickness variation is one of the most commonly reported Pilot complaints across both generations. Owners describe steering wheel shake and pedal pulsation during highway-speed braking, often recurring after inexpensive pad-and-rotor jobs if hub runout, caliper slide condition, or lug torque is ignored. The Pilot's weight and heat load can make low-quality rotors especially prone to repeat judder.

    This issue also affects: Honda Accord, Honda Odyssey, Acura RDX

    Common Symptoms

    • steering wheel shakes when braking
    • brake pedal pulsation
    • vibration at highway speeds only during braking
    • recurrent front brake wear
    • hot brake smell after stops

    How to Fix

    Confirm the vibration occurs only during braking, then measure rotor thickness variation and check hub runout, caliper slide pins, and pad wear pattern. Replace rotors and pads with quality parts, clean rust from the hub face, lubricate slide pins, torque wheels evenly by hand to spec, and flush old brake fluid if caliper drag is suspected. If pulsation returns quickly, inspect for sticking calipers or rear brake imbalance contributing to front overheating.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Honda 45251-TA6-A00 front brake rotor
      OEMHonda 45251-TA6-A00

      2003-2008 front rotor branch after runout/thickness or condition confirms replacement Fitment/availability: 2003-2008 U.S.

      HondaPartsNow
    • Genuine Honda 45022-S9V-A02 front brake pad set
      OEMHonda 45022-S9V-A02

      Honda Pilot, front axle, listed 2WD/4WD trims with KA/KL 5AT; one catalog pad set, confirm package contents before purchase.

      HondaPartsNow
    • Genuine Honda 45251-STX-H01 17-inch front brake rotor
      OEMHonda 45251-STX-H01

      2009-2013 front rotor branch after runout/thickness or condition confirms replacement Fitment/availability: 2009-2013 U.S.

      HondaPartsNow
    • Genuine Honda 45022-SZA-A01 front brake pad set
      OEMHonda 45022-SZA-A01

      2009-2011 matched front pad-set branch Fitment/availability: 2009-2011 U.S. Honda Pilot, front axle, 2WD or 4WD with KA 5AT; not the 2012-2013 pad branch.

      HondaPartsNow
    • Genuine Honda 45022-SZA-406 front brake pad set
      OEMHonda 45022-SZA-406

      2012-2013 matched front pad-set branch Fitment/availability: 2012-2013 U.S. Honda Pilot, front axle, 2WD or 4WD with KA 5AT; supersedes 45022-SZA-405/A10/A11.

      HondaPartsNow

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Owner tips & cautions

    • TipAsk the shop to measure hub runout and clean the hub face before installing new rotors; many repeat failures are caused by mounting surfaces, not just rotor quality.
    • TipAvoid impact-gun final tightening on lug nuts because uneven torque can contribute to rotor distortion and pulsation.
    Typical repair cost:$300 - $900

    Research This Issue

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    Community Reported
    High Confidence

    On the 2003-2008 Honda Pilot, a common first-generation Pilot issue is failure of the front seat belt buckle switch or related SRS wiring, which turns on the airbag warning light and can affect occupant detection logic. Honda issued service information and many owners report repeated SRS lamp illumination even when the belts latch normally. The problem is usually isolated to the buckle switch contacts or wiring in the seat area rather than the airbag module itself.

    Common Symptoms

    • airbag light stays on
    • SRS warning lamp illuminated
    • intermittent airbag warning after moving seat
    • seat belt appears latched but warning remains

    How to Fix

    Scan the SRS system with a capable Honda-compatible tool and inspect buckle switch status data for the driver and passenger seats. Repair typically involves replacing the affected seat belt buckle assembly or repairing seat harness wiring/connectors, then clearing SRS codes. Generic code readers usually cannot access these faults, so proper SRS diagnostics are important.

    Typical repair cost:$250 - $700

    Research This Issue

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    High Confidence

    On the 2003-2018 Honda Pilot 3.5L V6, the Pilot's three-way catalytic converters lose conversion efficiency with age and contamination, setting P0420 (Bank 1) and/or P0430 (Bank 2) and illuminating the check engine light. Symptoms include reduced power/fuel economy, a rotten-egg (sulfur) smell, and a rattle from a broken internal substrate. Note: on 2016-2018 Pilots these catalyst codes are very often caused upstream by failing fuel injectors (covered by Honda TSB 20-100 and a 10yr/150k warranty extension), so a full diagnosis is essential before condemning the converter.

    This issue also affects: Honda Accord, Honda Crosstour, Honda CR-V

    Common Symptoms

    • Check engine light with P0420 or P0430
    • Rotten-egg / sulfur exhaust smell
    • Reduced power and fuel economy
    • Rattle from the converter
    • Failed emissions/inspection

    How to Fix

    Diagnose before replacing: verify upstream/downstream O2 sensor behavior and rule out injectors (especially 2016-2018) and exhaust leaks. If the converter is genuinely failed, replace with an OEM or CARB-compliant unit for the affected bank. Address any root cause (oil consumption/VCM, misfires, rich condition) so the new converter is not damaged.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Honda 16010-RLV-315 six-piece fuel-injector set
      OEMHonda 16010-RLV-315

      Retail fallback only after Honda warranty/VIN review and diagnosis confirm the injector branch Fitment/availability: 2016-2018 U.S.

      HondaPartsNow

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$500 - $2,300

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 2003-2013 Honda Pilot 3.5L V6, owners across both generations report water leaks into the cabin, commonly from clogged sunroof drains, deteriorated roof seam sealer, windshield perimeter leaks, or rear body seam leaks. Symptoms include wet headliners, damp carpets, musty odor, water in the overhead console area, and occasional electrical issues when moisture reaches connectors or modules. On older first-generation trucks, seam sealer shrinkage and body aging are frequent contributors.

    This issue also affects: Honda Accord, Honda Odyssey, Acura RDX

    Common Symptoms

    • wet headliner
    • damp front or rear carpet
    • musty smell
    • water dripping from overhead console
    • foggy windows
    • intermittent electrical issues after rain

    How to Fix

    Perform a controlled water test beginning at the roof, windshield, and sunroof cassette drains, then inspect headliner and pillar trim for water tracks. Clear sunroof drains with low-pressure air or flexible line, reseal failed roof/body seams with automotive seam sealer, and repair windshield or hatch-area leaks as needed. Dry the carpet and inspect under-seat and pillar connectors to prevent corrosion-related electrical faults.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • 3M 08367 black urethane automotive seam sealer, 310 mL
      OEM3M 08367 / UPC 051135083673

      conditional body-seam reseal only after the controlled water test proves a failed compatible seam Fitment/availability: Universal professional automotive seam sealer for properly prepared bare, primed or painted metal; not a sunroof-drai…

      JB Tools

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Owner tips & cautions

    • TipDo not use high-pressure compressed air on sunroof drains; it can disconnect the drain tube inside the pillar and make the leak worse.
    • TipAfter fixing the leak source, pull up the carpet padding and dry it fully because trapped moisture can linger for weeks and corrode connectors.
    Typical repair cost:$100 - $1,200

    Research This Issue

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    Community Reported
    Medium Confidence

    On the 2003-2015 Honda Pilot 3.5L V6, on the Pilot's dual-zone rear A/C system, the front vents blow cold but the rear vents blow warm. Common causes are a clogged or stuck-closed rear expansion valve (starving the rear evaporator of refrigerant), a plugged rear evaporator, or a stuck rear blend-door actuator holding the rear in the heat position. A dirty screen on the rear blower can also reduce cooling. It is a widely reported complaint on family-hauler Pilots.

    This issue also affects: Honda Accord, Honda Odyssey, Acura RDX

    Common Symptoms

    • Front A/C cold but rear vents blow warm
    • Weak or no cooling from rear vents
    • Rear blows hot even with rear A/C on
    • Uneven cabin temperature front to rear

    How to Fix

    Diagnose the rear circuit separately from the front: verify refrigerant reaches the rear evaporator (check the rear expansion valve for clog/stick), inspect the rear blend-door actuator movement, and clean the rear blower intake screen. Replace the expansion valve, rear actuator, or (worst case) the rear evaporator as indicated, then evacuate and recharge.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Honda 80221-S3V-A51 rear A/C expansion-valve assembly
      OEMHonda 80221-S3V-A51

      2003-2008 rear refrigerant-metering branch after measurements prove the rear valve is restricted or stuck Fitment/availability: 2003-2008 U.S. Honda Pilot 3.5L, all cataloged trims and 5AT variants; rear expansion valve.

      HondaPartsNow
    • Denso 475-2080 rear A/C expansion valve
      OEMDenso 475-2080 / Honda 80221-STX-A41

      2009-2015 rear refrigerant-metering branch after measurements prove the rear valve is restricted or stuck Fitment/availability: 2009-2015 U.S. Honda Pilot rear A/C; Denso 475-2080 cross-references Honda 80221-STX-A41 and is specifically …

      FinditParts
    • Genuine Honda 80225-S3V-A51 rear evaporator assembly
      OEMHonda 80225-S3V-A51

      2003-2008 rear evaporator branch only after leak testing or temperature/pressure diagnosis proves the core failed Fitment/availability: 2003-2008 U.S. Honda Pilot 3.5L, all cataloged trims and 5AT variants; rear evaporator assembly.

      HondaPartsNow
    • Genuine Honda 80225-SZA-A01 rear evaporator assembly
      OEMHonda 80225-SZA-A01

      2009-2015 rear evaporator branch only after leak testing or temperature/pressure diagnosis proves the core failed Fitment/availability: 2009-2015 U.S. Honda Pilot 3.5L, all cataloged 2WD/4WD trims with KA 5AT; rear evaporator assembly.

      HondaPartsNow
    • Genuine Honda 79351-S3V-A51 rear air-mix motor
      OEMHonda 79351-S3V-A51

      Verify VIN/trim because first-generation rear controls differ by equipment.

      HondaPartsNow
    • Genuine Honda 79260-SZA-305 rear HVAC blend-door actuator
      OEMHonda 79260-SZA-305

      Confirm VIN before ordering.

      Honda OEM Discount Parts

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$150 - $1,200

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 2003-2008 Honda Pilot 3.5L V6, the braided flex section of the exhaust front pipe develops holes in its mesh and cracks, producing a loud exhaust drone/roar, a rattle, and exhaust odor that can enter the cabin. Failure is accelerated by worn/broken engine mounts that let the engine rock and stress the flex joint. The OEM front pipe has been discontinued, pushing owners to aftermarket (Walker/Bosal) replacements.

    This issue also affects: Honda Accord, Honda Crosstour, Honda CR-V

    Common Symptoms

    • Loud exhaust drone or roar
    • Rattle from under the vehicle
    • Exhaust smell in the cabin
    • Hissing/ticking that is louder on cold start
    • Failed emissions or downstream catalyst codes

    How to Fix

    Replace the cracked front pipe with a Walker or Bosal aftermarket unit, or have a muffler shop weld in a proper stainless flex section. Address worn engine/transmission mounts at the same time to prevent premature re-failure. Expect rusty flange bolts that may snap and need to be cut/replaced.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Walker 50313 front exhaust Y-pipe with flex section
      OEMWalker 50313

      Verify federal/local emissions configuration and flange condition before ordering.

      PartsGeek
    • Genuine Honda 18210-S9V-A02 front exhaust pipe
      OEMHonda 18210-S9V-A02

      2005-only complete front-pipe branch Fitment/availability: 2005 U.S. Honda Pilot EX, EX-L and LX 3.5L with KA 5AT; not the 2003-2004 or 2006-2008 pipe.

      HondaPartsNow
    • Genuine Honda 18210-S3V-A02 front exhaust pipe
      OEMHonda 18210-S3V-A02

      2006-2008 complete front-pipe branch Fitment/availability: 2006-2008 U.S. Honda Pilot 3.5L, listed 2WD/AWD trims with KA 5AT; supersedes 18210-S3V-A11.

      HondaPartsNow

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$200 - $700

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 2003-2015 Honda Pilot 3.5L V6, the second-row seat's fold/tilt mechanism fails when the release cable comes loose/frays or the plastic tab on the top latch is cut through by its actuating wire. The lever moves but the latch won't release, so the seat won't fold flat for cargo or won't tilt/slide forward for third-row access. It's a frequently reported ownership annoyance across early Pilot generations.

    This issue also affects: Honda Accord, Honda Odyssey, Acura RDX

    Common Symptoms

    • Seat lever moves but seat won't fold flat
    • Latch won't release
    • Seat won't tilt/slide forward for 3rd-row access
    • Cable feels loose or disconnected
    • Broken plastic tab on the latch

    How to Fix

    Inspect the folding cable inside the seat frame for detachment/fraying and the latch tab for damage. Honda designed two attachment points into the latch, so the wire can often be moved from the broken tab to the intact one. Re-seat or replace the cable and lubricate pivot points; an independent shop repair typically runs around $200.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Honda 82234-S9V-A01 Cable A right rear-seat reclining lever
      OEMHonda 82234-S9V-A01

      2003-2008 passenger/right seat recline-release branch after inspection proves Cable A is detached, stretched or frayed Fitment/availability: 2003-2008 U.S. Honda Pilot, passenger/right rear-seat reclining-lever Cable A; all cataloged tri…

      HondaPartsNow
    • Genuine Honda 81763-S3V-A12 Cable B left middle-seat reclining lever
      OEMHonda 81763-S3V-A12

      2004-2008 driver/left second-row recline-release branch after inspection proves Cable B failed Fitment/availability: 2004-2008 U.S. Honda Pilot, middle driver-side Cable B for the reclining lever; not the walk-in cable or passenger-side …

      HondaPartsNow
    • Genuine Honda 82247-SZA-A01 Cable C rear-seat reclining lever
      OEMHonda 82247-SZA-A01

      2009-2015 driver/left rear-seat recline or fold-flat branch after inspection proves Cable C failed Fitment/availability: 2009-2015 U.S. Honda Pilot, driver-side Cable C rear-seat reclining lever; all cataloged 2WD/4WD trims with KA 5AT.

      HondaPartsNow
    • Genuine Honda 81365-SZA-A02 Cable B middle-seat walk-in release
      OEMHonda 81365-SZA-A02

      Confirm the failed cable

      HondaPartsNow

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$100 - $400

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026
    Campaign #26V33200021/05/2026

    STRUCTURE:FRAME AND MEMBERS

    American Honda Motor Company (Honda) is recalling certain 2016-2022 Honda Pilot, 2017-2023 Ridgeline, 2019-2023 Passport, and 2014-2020 Acura MDX vehicles that were sold in Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, or Wisconsin. The rear subframe may corrode at the suspension mounting points, which can result in rear suspension component failure.

    Campaign #26V36500004/06/2026

    AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

    Honda (American Honda Motor Co.) is recalling certain 2014 Honda Insight and Acura TSX and TSX Wagon, 2014-2015 Honda Crosstour and Pilot vehicles nationwide, as well as certain 2014 Honda FCX Clarity and Fit EV vehicles in Florida, Hawaii, Puerto Rico, Texas, Alabama, Georgia, Louisiana, Mississippi, South Carolina, California, American Samoa, Guam, the Northern Mariana Islands (Saipan) and the U.S. Virgin Islands. Honda is also recalling certain 2011-2013 Acura TSX, TSX Wagon and ZDX, Honda Crosstour, Insight, Fit and Pilot vehicles, 2011-2012 Honda Accord and 2011 Honda Civic NGV, Civic, Civic Hybrid and CR-V vehicles in Arizona, Arkansas, Delaware, the District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia and West Virginia. Lastly, Honda is recalling certain 2010-2013 Acura TSX and ZDX, Honda Crosstour, Fit, Insight and Pilot, 2011-2013 TSX Wagon, 2010-2012 Honda Accord and 2010-2011 Honda Civic NGV, Civic, Civic Hybrid and CR-V vehicles in Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin and Wyoming. These vehicles are equipped with certain air bag air bag inflators assembled as part of the frontal air bag modules, and used as original equipment or replacement equipment (such as after a vehicle crash necessitating replacement of the original air bags), may explode due to propellant degradation occurring after long-term exposure to higher absolute humidity, temperature and temperature cycling.

    Campaign #18V66100027/09/2018

    + 9 more recalls. Check all on NHTSA.gov

    Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

    get a full repair guide

    What is the 2003-2008 Honda Pilot Radiator End Tank Cracking and Coolant Leaks Lead to Overheating?

    First-generation Pilots commonly develop coolant leaks from the plastic radiator end tanks or crimp seams as the radiator ages. Owners often notice a sweet smell, coolant residue on the radiator side tanks, or a gradual drop in coolant level before an overheating event. If ignore… Repairs typically run $400-$900. Severity: medium.

    What is the 2003-2008 Honda Pilot Front Suspension Compliance Bushing and Lower Control Arm Wear Causing Clunks and Tire Wear?

    First-generation Pilots commonly develop worn front compliance bushings and lower control arm bushings, leading to clunking over bumps, vague steering feel, braking instability, and uneven front tire wear. This is widely reported by owners and independent shops because the heavy… Repairs typically run $500-$1,200. Severity: medium.

    What is the 2003-2013 Honda Pilot Front Brake Rotor Warping and Brake Judder Under Moderate Braking?

    Brake pulsation from front rotor thickness variation is one of the most commonly reported Pilot complaints across both generations. Owners describe steering wheel shake and pedal pulsation during highway-speed braking, often recurring after inexpensive pad-and-rotor jobs if hub r… Repairs typically run $300-$900. Severity: medium.

    What is the 2003-2008 Honda Pilot Front Seat Belt Buckle Switch Failure Triggers Airbag Warning Light?

    A common first-generation Pilot issue is failure of the front seat belt buckle switch or related SRS wiring, which turns on the airbag warning light and can affect occupant detection logic. Honda issued service information and many owners report repeated SRS lamp illumination eve… Repairs typically run $250-$700. Severity: medium.

    What is the 2003-2008 Honda Pilot Tailgate/Rear Hatch Wiring Harness Breaks Causing Inoperative Rear Lights, Lock, or Glass Release?

    On first-generation Pilots, repeated opening and closing of the rear hatch can fatigue and break wires inside the hatch harness near the hinge or rubber boot. Owners report intermittent or failed rear license plate lights, rear wiper, rear glass release, power lock, or tailgate-r… Repairs typically run $150-$700. Severity: medium.

    What is the 2003-2011 Honda Pilot Power Steering Pump and O-Ring Air Ingestion Causing Whine, Foamy Fluid, and Hard Steering?

    A very common Honda V6-era issue is power steering pump noise caused by suction-side air intrusion, often from a hardened inlet O-ring or aging pump seals. Owners report a cold-start groan or whining noise, visible bubbles in the reservoir, intermittent heavy steering, and fluid… Repairs typically run $20-$700. Severity: medium.

    What is the 2003-2018 Honda Pilot Catalytic Converter Efficiency Failure Triggering P0420 / P0430?

    The Pilot's three-way catalytic converters lose conversion efficiency with age and contamination, setting P0420 (Bank 1) and/or P0430 (Bank 2) and illuminating the check engine light. Symptoms include reduced power/fuel economy, a rotten-egg (sulfur) smell, and a rattle from a br… Repairs typically run $500-$2,300. Severity: medium.

    What is the 2003-2013 Honda Pilot Front and Rear Wheel Bearing Failure Causes Humming Noise and ABS/VSA Faults?

    Wheel bearing wear is a widely reported Pilot problem across both generations, often showing up as a growling or humming noise that changes with road speed and steering input. On some vehicles, excessive bearing play or damage to the integrated wheel speed sensor tone ring can al… Repairs typically run $350-$900. Severity: medium.

    What is the 2003-2013 Honda Pilot Water Intrusion Through Roof Seams or Sunroof Drains Causing Wet Headliner and Electrical Problems?

    Owners across both generations report water leaks into the cabin, commonly from clogged sunroof drains, deteriorated roof seam sealer, windshield perimeter leaks, or rear body seam leaks. Symptoms include wet headliners, damp carpets, musty odor, water in the overhead console are… Repairs typically run $100-$1,200. Severity: medium.

    What is the 2003-2015 Honda Pilot Rear A/C Blows Warm — Clogged Rear Expansion Valve / Evaporator or Stuck Rear Blend Door?

    On the Pilot's dual-zone rear A/C system, the front vents blow cold but the rear vents blow warm. Common causes are a clogged or stuck-closed rear expansion valve (starving the rear evaporator of refrigerant), a plugged rear evaporator, or a stuck rear blend-door actuator holding… Repairs typically run $150-$1,200. Severity: medium.

    What is the 2003-2008 Honda Pilot Exhaust Front Pipe / Flex Pipe Cracking Causing Leak, Drone, and Fumes?

    The braided flex section of the exhaust front pipe develops holes in its mesh and cracks, producing a loud exhaust drone/roar, a rattle, and exhaust odor that can enter the cabin. Failure is accelerated by worn/broken engine mounts that let the engine rock and stress the flex joi… Repairs typically run $200-$700. Severity: medium.

    What is the 2003-2015 Honda Pilot Second-Row Seat Fold/Tilt Latch and Cable Failure — Seat Won't Fold Flat or Tumble Forward?

    The second-row seat's fold/tilt mechanism fails when the release cable comes loose/frays or the plastic tab on the top latch is cut through by its actuating wire. The lever moves but the latch won't release, so the seat won't fold flat for cargo or won't tilt/slide forward for th… Repairs typically run $100-$400. Severity: low.