OBD Guide
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P2DBB

Battery Charging System B High Voltage Interlock Circuit Intermittent/Erratic

P2DBB is an OBD-II diagnostic trouble code meaning: Battery Charging System B High Voltage Interlock Circuit Intermittent/Erratic. Common causes: damage to high voltage wiring harness, oxidation or poor contact in connectors. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Intermittent operation of the hybrid/electric system
  • Flashing warning lights on the dashboard
  • Reduced battery charging efficiency
  • Power loss in electric mode
  • Error messages in the high voltage system

Causes

  • Damage to high voltage wiring harness
  • Oxidation or poor contact in connectors
  • Malfunction of the high voltage system control unit
  • Damage to the insulation of high-voltage cables
  • Problems with interconnect circuit sensors

How to Fix

  1. Visual inspection of high-voltage cables and connectors for damage
  2. Checking Interconnect Circuit Connections
  3. Diagnostics of high-voltage system control units
  4. Measuring resistance and integrity of high voltage circuits
  5. Updating the control module software (if recommended)

Related codes

P2DBCP2DBAP0AA6

Error P2DBB by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P2DBB code mean?

P2DBB is an OBD-II diagnostic trouble code that indicates: Battery Charging System B High Voltage Interlock Circuit Intermittent/Erratic

What causes a P2DBB error code?

The most common causes of P2DBB include: Damage to high voltage wiring harness; Oxidation or poor contact in connectors; Malfunction of the high voltage system control unit; Damage to the insulation of high-voltage cables.

How do I fix a P2DBB diagnostic trouble code?

To fix P2DBB: Visual inspection of high-voltage cables and connectors for damage. Checking Interconnect Circuit Connections. Diagnostics of high-voltage system control units. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2DBB?

Limited driving only, diagnose soon

How much does it cost to fix P2DBB?

The estimated repair cost for P2DBB is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat