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. 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 radio fuse to test if radio causing 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 (1)
Alternator diode failure causing persistent battery drain even after replacement. Common failure point around 140k miles. OEM Honda alternators strongly preferred over aftermarket by Element community - aftermarket often fail prematurely. Test with multimeter (should read 13.5-14.5V running). Check battery connections for corrosion first. Replace serpentine belt while doing alternator work if worn.
Common Symptoms
- Battery light on dashboard
- Battery drain even with new alternator
- 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. AP1 and AP2 alternators are interchangeable. 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 9th-gen cars a persistent 'check charging system' light can also stem from the battery-management sensor (see the 17V-418 recall) rather than the alternator, 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.
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Sources for this issue (1)
Honda HR-V models across all years experience electrical system problems including parasitic battery drain, premature battery failure, and stability control module failures. Owners report dead batteries after 24-48 hours of sitting, with the vehicle not holding a charge. Common causes include faulty door lock actuators causing constant drain, infotainment system staying on, and failing stability control modules. Stability control module replacement can cost $1,500+.
Common Symptoms
- Battery dies after 1-2 days of sitting
- Battery won't hold charge
- Multiple electrical warning lights
- VSA (stability control) warning light
- Infotainment system won't shut off
- Random electrical glitches
How to Fix
Perform parasitic draw test to identify the circuit causing drain (normal is <50mA). Common culprits: door lock actuators (pull fuse #13 to test), infotainment system, or stability control module. Replace faulty component. If battery is weak (load test <12.4V), replace battery first before chasing gremlins. OEM Honda battery: $150-250. Stability control module: $1,500-2,000.
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.This issue involves U codes, which a basic engine-code reader cannot see.
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 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 (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 issue - see separate issue), (2) Door lock actuators, (3) Honda Sensing modules. If battery is weak, replace first before chasing gremlins (load test should be >12.4V). 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)
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, HR-V, Passport.
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 →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.