P0562 on Honda: How to Diagnose & Fix
System Voltage Low
6 Honda models · 6 documented issues · 1 critical · $150-$2,000 repair
P0562 on Honda by model: symptoms, diagnosis and fix
Honda Pilots experience excessive parasitic battery drain (over 80mA) causing dead batteries after 24-48 hours. Common causes include radio/audio staying active when off, Bluetooth module constantly searching, and AC compressor clutch relay sticking on. Normal draw should be 12-30mA. The vehicle requires 30+ minutes to fully "fall asleep" with hood, doors, and trunk closed.
Common Symptoms
- Dead battery after sitting 24-48 hours
- Radio making noises when vehicle is off
- Battery repeatedly dying/needing jump starts
- Clicking sound when trying to start
- Weak cranking on startup
- Electrical accessories not working properly
How to Fix
Pull the radio fuse to test whether the radio is causing the drain. Replace defective Omron AC clutch relay (39794-SDA-A03) with updated Mitsuba relay (39794-SDA-A05). Disconnect or replace Bluetooth/hands-free module if causing drain. Test parasitic draw with multimeter after 30+ minutes. Replace weak battery. Check three main ground connections for oxidation/corrosion.
What you need to diagnose it
The fix here starts with a test, not a part — which repair you need depends on what the test finds.
UNI-T UT210E Low-Current DC Clamp Meter
1 mA resolution on the 2 A range — a 0.1 A meter reads a 50 mA drain as zero
$40–$70View
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Testing and isolating the fault is DIY work. Replacing or reprogramming a control module is not — most are VIN-programmed, so a new one does nothing until a shop codes it to your car. Check for an open recall or service bulletin before buying anything.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Honda/Mitsuba 39794-SDA-A05 power relayOEMHonda 39794-SDA-A05
Honda Pilot applications; the OEM engine-room catalog identifies this part as the magnetic-clutch relay. For the source's 2023 year, confirm the VIN-specific fuse-box cat
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
- TipPull radio fuse to test if radio is causing drain - if drain stops, radio is the culprit
- TipTest parasitic draw with multimeter after vehicle sits 30+ minutes - normal is 12-30mA, over 80mA is excessive
- WarningAllow at least 30 minutes for vehicle to fully fall asleep before measuring parasitic draw
Sources for this issue (2)
A failed alternator diode can cause a persistent battery drain that continues even after the battery is replaced. Failures are common around 140k miles. Element owners strongly prefer OEM Honda alternators and report that aftermarket units often fail prematurely.
Common Symptoms
- Battery light on dashboard
- Battery drain even after a new battery
- Slow or difficult starting, especially cold weather
- Burning smell or odd noises from alternator
- Electrical system voltage below 13V
How to Fix
Test with multimeter first (should read 13.5-14.5V running). Check serpentine belt tension and battery connections for corrosion. Replace alternator with OEM Honda unit (strongly recommended): $500-850. Check for bad diodes or voltage regulator. Replace belt while doing alternator work if worn.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Denso 210-0511 remanufactured 105-amp alternatorOEMDenso 210-0511
Early-engine charging-system replacement after load/ripple testing confirms alternator failure Fitment/availability: 2003-2006 U.S. Listing's compatibility table explicitly includes Element fitment through 2006; confirm trim/engine in eB…
- Denso 210-0609 remanufactured 105-amp alternatorOEMDenso 210-0609
Late-engine charging-system replacement after load/ripple testing confirms alternator failure Fitment/availability: 2007-2011 U.S.
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
- TipCommon failure point around 140k miles - budget for replacement at high mileage
- TipCheck battery connections for corrosion first - often misdiagnosed as alternator failure
- TipReplace serpentine belt while doing alternator work if worn - saves labor on future belt replacement
- TipTest with multimeter before replacing - should read 13.5-14.5V running, confirms diagnosis
Sources for this issue (2)
Alternator can fail at 80,000+ miles, preventing battery charging. Internal voltage regulator (AP2 especially) can malfunction. Honda lists different alternator part numbers for 2000-2005 and 2006-2009 cars, so confirm fitment by year. Symptoms include battery discharge, charging light illuminated, dimming headlights under load, weak starter cranking. OEM replacement recommended for reliability over remanufactured units.
Common Symptoms
- Battery discharge (dead battery after parking)
- Charging light illuminated during driving
- Dimming headlights under load
- Weak starter cranking
- Electrical system voltage drops below 13V
How to Fix
Test alternator output (~$50-100 diagnostic). Replacement alternator: OEM $400-600, Remanufactured $200-300. OEM replacement recommended for reliability. Have charging system tested regularly. Voltage regulator replacement included in alternator replacement.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- RareElectrical 13894*1 new 105A S2000 alternatorOEMRareElectrical 13894*1; Honda cross-references 31100-PCX-J01
complete alternator replacement only after battery, belt, cables, ripple and output tests confirm alternator failure Fitment/availability: Retailer explicitly lists U.S.
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
- TipHave charging system tested regularly at 80k+ miles to catch alternator failure before stranding
- TipThe charging light issue can occur even on functional alternators - get voltage tested to confirm
- TipAP1 and AP2 alternators are interchangeable - allows flexibility in parts sourcing
Sources for this issue (2)
The alternator (or its integrated voltage regulator) commonly wears out around 100,000-150,000 miles, showing a battery/charging warning light, headlights and dash lights that dim at idle and brighten with revs, and eventually a no-start from a dead battery. On 2013-2016 cars the battery sensor is also under recall 17V-418 (moisture can enter the sensor case and short it, a fire risk), so the charging fault must be pinpointed before parts are replaced.
Common Symptoms
- Battery/charging warning light
- Headlights and dash lights dim at idle, brighten on rev
- Slow crank or no-start / dead battery
- Whining or growling from the alternator
- Electrical accessories acting erratically
How to Fix
Load-test the charging system and battery. Verify battery voltage rises to ~13.8-14.6V with the engine running before condemning the alternator. Replace the alternator with an OEM or quality reman unit and inspect the serpentine belt/tensioner and the main charging cable/grounds. On 2013-2016 cars, rule out the recalled battery sensor and wiring before assuming the alternator is at fault.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Honda 31100-R40-A01 / Denso CSF89 alternator assemblyOEMHonda 31100-R40-A01 / Denso CSF89
Replace a load-tested failed alternator on the eighth-generation L4 branch Fitment/availability: 2008-2012 Accord 2.4L L4 only, cataloged 5AT/5MT trims after VIN confirmation.
- Denso 210-4349 remanufactured alternatorOEMDenso 210-4349
Replace a load-tested failed alternator on the ninth-generation L4 branch Fitment/availability: 2013-2017 Accord 2.4L L4 after VIN and charging-system confirmation.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (2)
Honda Passport owners report batteries dying after 24-48 hours of sitting, premature battery failure (under 3 years), and electrical issues caused by weak batteries. Common causes include: infotainment system staying awake (FAKRA connector issue), door lock actuators causing constant drain, and Honda Sensing modules not sleeping properly. The aggressive Idle Stop system also kills weak batteries faster. Normal parasitic draw should be under 50mA - anything higher indicates a problem. OEM Honda batteries are known to fail early on Passports.
Common Symptoms
- Battery dies after 1-2 days of sitting
- Battery won't hold charge
- Slow cranking when starting
- Electrical gremlins (lights flickering, radio glitches)
- Idle Stop system not engaging (low battery)
- Battery warning light
- Dead battery after short trip or overnight
How to Fix
Perform parasitic draw test to identify circuit causing drain (normal is <50mA). Common culprits: (1) Infotainment system (FAKRA connector defect), (2) Door lock actuators, (3) Honda Sensing modules. If battery is weak, replace first before chasing gremlins (resting voltage should be at least 12.4V, and a load test should hold above 9.6V). Aftermarket AGM batteries (Interstate, DieHard) last longer than OEM Honda batteries on Passports. Cost: $150-300 for battery, $100-500 for drain diagnosis/repair.
What you need to diagnose it
The fix here starts with a test, not a part — which repair you need depends on what the test finds.
UNI-T UT210E Low-Current DC Clamp Meter
1 mA resolution on the 2 A range — a 0.1 A meter reads a 50 mA drain as zero
$40–$70View
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Testing and isolating the fault is DIY work. Replacing or reprogramming a control module is not — most are VIN-programmed, so a new one does nothing until a shop codes it to your car. Check for an open recall or service bulletin before buying anything.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- DieHard Platinum H6-AGM battery, 760 CCAOEMDieHard H6-AGM
Confirm terminal orientation, hold-down dimensions and cu
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
- TipDIY drain test: Fully charge battery, disconnect negative cable, connect multimeter between cable and terminal. Normal draw is <50mA. Higher = parasitic drain.
- WarningDon't just keep replacing battery - find and fix the parasitic drain or you'll kill battery after battery.
- TipIf drain started after infotainment issues, it's likely FAKRA connector related - fixing that will fix drain (see infotainment issue entry).
Sources for this issue (2)
Some HR-V owners report the car will not start after it has been parked for a few days, sometimes again after the battery has already been replaced. Dealers have found nothing wrong, or put it down to the small factory battery. A 2019 owner was told to drive more and keep the car plugged into a battery maintainer. Causes owners found differ from car to car. On one 2016, a dealer replaced the battery and found nothing else, and the owner later got a diagnosis of a failing main ground cable; fixing it ended the problem. A 2022 owner traced the drain to two fuses that power circuits while the engine is off (the same fuses the shipping instructions say to pull), and the dealer replaced the battery under warranty. We found no Honda service bulletin for HR-V battery drain. Honda bulletin 17-032 covers a VSA-module drain, but it applies only to the 2017 CR-V. A separate fault, an internal failure of the VSA (stability control) modulator, makes the dash warning lights flash and stay on. One 2016 owner paid nearly $1,500 for a new modulator at a dealer. That is a different repair from a battery drain.
Common Symptoms
- Car will not start after sitting for a few days
- Battery goes flat again after being replaced
- Dealer battery and alternator tests find nothing wrong
- VSA and other dashboard warning lights flash and stay on (VSA modulator failure)
How to Fix
1) Rule out the simple causes first. Make sure the dome light is set to off, not door/auto. Keep the keyless fob away from the car when it is parked, because a nearby fob can keep talking to the car and drain both the fob and the car battery. Check that both battery cables and the main ground cable are clean and tight. A failing main ground was the cause on one 2016. 2) Have the battery and alternator tested, not just the voltage checked. If the battery is weak, replace it before looking for a drain. 3) If a good battery still goes flat, ask for a parasitic draw test. On one 2016, the dealer tested the battery and alternator but did not test for a draw. With the car off, draw should be under about 50 mA. Pulling fuses one at a time while watching the reading shows which circuit is drawing power, which is how a 2022 owner found two fuses that stay powered with the engine off. 4) Under the new-car warranty, a dealer may replace the battery, as on a 2022 HR-V. Keep records of each no-start. We found no HR-V recall or extended warranty for battery drain. Bulletin 17-032 (VSA software update for a 350 mA drain) covers only the 2017 CR-V, but you can ask the dealer to check your VIN for any open campaigns. 5) If the VSA and other dash warning lights flash and stay on, have the stability control system scanned for codes. If the VSA modulator itself has failed internally, it has to be replaced (one owner paid nearly $1,500 at a dealer).
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- DieHard Platinum 51R-AGM battery, 435 CCAOEMDieHard 51R-AGM
Replacement battery branch only after charging-system and battery testing confirms the battery is failed or cannot hold rated capacity Fitment/availability: BCI Group 51R application for 2016-2023 U.S. Honda HR-V 1.8L/2.0L; confirm fitme…
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
- TipHRVForum DIY: Pull fuse #13 (power door locks) overnight - if battery stays charged, you have a bad door lock actuator causing the drain.
- WarningDon't just keep replacing the battery - find and fix the parasitic drain or you'll kill battery after battery.
- TipDisconnect the infotainment harness overnight (under dash) - if drain stops, the head unit is staying awake and needs replacement/reflash.
Sources for this issue (7)
- NHTSA Vehicle Complaints for 2016 Honda HR-Vnhtsa
- Reddit r/MechanicAdvice Thread Discussing Honda HR-V Battery Drain Issuesforum
- Car Talk Community: 2016 Honda HR-V batteryforum
- CarComplaints: 2019 Honda HR-V dead batteryowner-report
- CarComplaints: 2022 Honda HR-V weak batteryowner-report
- CarComplaints: 2016 Honda HR-V electronic stability controlowner-report
- Honda Service Bulletin 17-032: Parasitic battery draw from VSA modulatortsb
P0562 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0562 mean on a Honda?
P0562 stands for "System Voltage Low." P0562 means the engine computer detected that the vehicle's system (battery/charging) voltage is too low for normal operation. The computer constantly monitors charging-system voltage because nearly every sensor, injector, and module depends on a stable supply; sustained low voltage can cause erratic behavior and other false codes. This is most often a charging or battery problem — the alternator isn't keeping up, the battery is weak, or there's resistance in the cables/grounds. You may notice dim lights, slow cranking, or multiple unrelated warning lights. On Honda it is documented across 6 models: Pilot, Element, S2000, Accord, Passport, HR-V.
What are the most common causes of P0562?
The most common causes of P0562 are: Failing alternator or worn alternator brushes/regulator, Weak, old, or discharged battery, Corroded, loose, or damaged battery cables and terminals, Bad engine or chassis ground connections, Slipping, glazed, or broken serpentine/drive belt, High resistance in charging system wiring or fusible link, Faulty PCM voltage reference or charging-system control. The specific cause varies by vehicle.
How much does it cost to fix P0562 on a Honda?
Published repair estimates on Honda range from $150 to $2,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0562 on a different make?
View P0562 across all makes →Join 700+ subscribers following Au7o for vehicle insights and updates.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.