OBD Guide
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P2E31

Battery Charger B Module Supply Voltage High

P2E31 is an OBD-II diagnostic trouble code meaning: Battery Charger B Module Supply Voltage High. Common causes: battery charging module b faulty, problems with high voltage battery. Estimated repair cost: $167–556.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • Check engine light comes on
  • Reduced battery charging efficiency
  • System transition to emergency mode
  • Vehicle power limitation
  • Error message on display

Causes

  • Battery charging module B faulty
  • Problems with high voltage battery
  • Energy management system malfunction
  • Damage to wiring or connectors
  • Software error in the control system

How to Fix

  1. Diagnostics of battery charging module B
  2. Checking the condition of the high-voltage battery
  3. Inspect wiring and connectors for damage
  4. Control system software update
  5. Replacing the charging module if necessary

Related codes

P2E30P2E32P0AA6

Error P2E31 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P2E31 code mean?

P2E31 is an OBD-II diagnostic trouble code that indicates: Battery Charger B Module Supply Voltage High

What causes a P2E31 error code?

The most common causes of P2E31 include: Battery charging module B faulty; Problems with high voltage battery; Energy management system malfunction; Damage to wiring or connectors.

How do I fix a P2E31 diagnostic trouble code?

To fix P2E31: Diagnostics of battery charging module B. Checking the condition of the high-voltage battery. Inspect wiring and connectors for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2E31?

Limited driving only, diagnose soon

How much does it cost to fix P2E31?

The estimated repair cost for P2E31 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat