Fault code lookup

PowertrainP0B4A

Caution

Severity: Caution - get it checked when you can

Hybrid/EV Battery Voltage Sense D Circuit

27 brands affected · Generic SAE J2012 description.

Key terms: Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

Safety: This code relates to the charging system. The battery may go flat and the car may stall.

1What it means in plain English

The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.

2Common causes

  1. Sensor or actuator fault
  2. Wiring or connector fault
  3. Vacuum or intake leak
  4. Fuel or ignition problem
  5. Control module fault

3Can I drive?

Caution · drive with care

The electrical system may fail and the battery may go flat, risking a stall. If the battery or charging warning light is on, drive straight to a workshop.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 27

BrandCodeDescriptionSystem
Ashok Leyland CVP0B4AABS Warning Lamp. Open Circuit.Speed Dropout BrandPowertrain
BAIC MotorP0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
Mercedes-BenzP0B4AHybrid/EV Battery Voltage Sense D Circuit SAEPowertrain
BYDP0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
CheryP0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
DaewooP0B4AHybrid/EV Battery Voltage Sense D Circuit SAEPowertrain
DFFSP0B4AUnder status, short circuit to ground BrandPowertrain
DFFXP0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
DFXKP0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
EOBDP0B4ASirkuit tegangan baterai Hibrida/EV 'D' BrandPowertrain
GeelyP0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
GMP0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
Great WallP0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
HafeiP0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
HoldenP0B4AHybrid/EV Battery 4 Circuit BrandPowertrain
HondaP0B4AHV Battery Voltage Sense 4 Circuit BrandPowertrain
HyundaiP0B4AHybrid/EV Battery Voltage Sense D Circuit SAEPowertrain
IsuzuP0B4AHybrid/EV Battery Voltage Sense D Circuit SAEPowertrain
Land RoverP0B4AHybrid/electric vehicle battery - Voltage - Sense D - Circuit BrandPowertrain
MitsubishiP0B4ACell voltage sensor open BrandPowertrain
OpelP0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
PeugeotP0B4AHybrid/EV Battery Voltage Sense D Circuit SAEPowertrain
ProtonP0B4ACell voltage sensor open BrandPowertrain
SaabP0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
MG (SAIC)P0B4AHybrid Battery Voltage Sense 'D' Circuit BrandPowertrain
SubaruP0B4AHybrid/EV Battery Voltage Sense D Circuit SAEPowertrain
ToyotaP0B4AUnder status, short circuit to ground BrandPowertrain

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Extended variant codes 8

These 7-character codes are manufacturer-specific variants of P0B4A and may be reported by some scan tools.

BrandCodeDescriptionSystem
Mercedes-BenzP0B4A09Sensor D for the battery voltage of the hybrid/high-voltage battery has an electrical fault. Component Failure. BrandPowertrain
Mercedes-BenzP0B4A16Sensor D for the battery voltage of the hybrid/high-voltage battery has an electrical fault. Circuit Voltage Below Threshold. BrandPowertrain
Mercedes-BenzP0B4A17Sensor D for the battery voltage of the hybrid/high-voltage battery has an electrical fault. Circuit Voltage Above Threshold. BrandPowertrain
Mercedes-BenzP0B4A1FSensor D for the battery voltage of the hybrid/high-voltage battery has an electrical fault. Circuit Intermittent. BrandPowertrain
Mercedes-BenzP0B4A29Sensor D for the battery voltage of the hybrid/high-voltage battery has an electrical fault. Signal Invalid. BrandPowertrain
Mercedes-BenzP0B4A96Sensor D for the battery voltage of the hybrid/high-voltage battery has an electrical fault. Component Internal Failure. BrandPowertrain
Mercedes-BenzP0B4A9ESensor D for the battery voltage of the hybrid/high-voltage battery has an electrical fault. Stuck On. BrandPowertrain
Mercedes-BenzP0B4AFFSensor D for the battery voltage of the hybrid/high-voltage battery has an electrical fault. FF. BrandPowertrain

6Related codes

  • P0B40 Hybrid/EV Battery Voltage Sense B Circuit
  • P0B41 Hybrid/EV Battery Voltage Sense B Circuit Range/Performance
  • P0B42 Hybrid/EV Battery Voltage Sense B Circuit Low
  • P0B43 Hybrid/EV Battery Voltage Sense B Circuit High
  • P0B44 Under status, short circuit to ground
  • P0B45 Hybrid/EV Battery Voltage Sense C Circuit
  • P0B46 Hybrid/EV Battery Voltage Sense C Circuit Range/Performance
  • P0B47 Hybrid/EV Battery Voltage Sense C Circuit Low
  • P0B48 Hybrid/EV Battery Voltage Sense C Circuit High
  • P0B49 Under status, open load
  • P0B4B Hybrid/EV Battery Voltage Sense D Circuit Range/Performance
  • P0B4C Short circuit to battery (+)

Browse Pxxx codes or P0B4xx codes.

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