PowertrainP0B4B

Caution

Severity: Caution - get it checked when you can

Hybrid/EV Battery Voltage Sense D Circuit Range/Performance

28 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

Sensor or actuator fault
Wiring or connector fault
Vacuum or intake leak
Fuel or ignition problem
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 28

Brand	Code	Description	System
Ashok Leyland CV	P0B4B	Hybrid/EV Battery Voltage Sense D Circuit Range/Performance SAE	Powertrain
BAIC Motor	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
Mercedes-Benz	P0B4B	Hybrid/EV Battery Voltage Sense D Circuit Range/Performance SAE	Powertrain
BYD	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
Chery	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
Chrysler	P0B4B	Hybrid/EV Battery Voltage Sense D Circuit Range/Performance SAE	Powertrain
Daewoo	P0B4B	Hybrid/EV Battery Voltage Sense D Circuit Range/Performance SAE	Powertrain
DFFS	P0B4B	Under status, open load Brand	Powertrain
DFFX	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
DFXK	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
EOBD	P0B4B	Hybrid/EV-batterispenningssensing 'D'-kretsområde/ytelse Brand	Powertrain
Geely	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
GM	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
Great Wall	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
Hafei	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
Holden	P0B4B	Hybrid/EV Battery 4 Circuit Performance Brand	Powertrain
Honda	P0B4B	Hybrid/EV Battery Voltage Sense D Circuit Range/Performance SAE	Powertrain
Hyundai	P0B4B	Hybrid/EV Battery Voltage Sense D Circuit Range/Performance SAE	Powertrain
Isuzu	P0B4B	Hybrid/EV Battery Voltage Sense D Circuit Range/Performance SAE	Powertrain
Land Rover	P0B4B	Hybrid/EV Battery Voltage Sense D Circuit Range/Performance SAE	Powertrain
Mitsubishi	P0B4B	Cell voltage SNS. rationality Brand	Powertrain
Opel	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
Peugeot	P0B4B	Hybrid/EV Battery Voltage Sense D Circuit Range/Performance SAE	Powertrain
Proton	P0B4B	Cell voltage SNS. rationality Brand	Powertrain
Saab	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
MG (SAIC)	P0B4B	Hybrid Battery Voltage Sense 'D' Circuit Range/Performance Brand	Powertrain
Subaru	P0B4B	Hybrid/EV Battery Voltage Sense D Circuit Range/Performance SAE	Powertrain
Toyota	P0B4B	Under status, open load Brand	Powertrain

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 3

These 7-character codes are manufacturer-specific variants of P0B4B and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P0B4B00	Sensor D for the battery voltage of the hybrid/high-voltage battery has a malfunction. Brand	Powertrain
Mercedes-Benz	P0B4B16	Sensor D for the battery voltage of the hybrid/high-voltage battery has a malfunction. The limit value for electrical voltage has not been attained. Brand	Powertrain
Mercedes-Benz	P0B4B17	Sensor D for the battery voltage of the hybrid/high-voltage battery has a malfunction. The limit value for electrical voltage has been exceeded. Brand	Powertrain

6Related codes

Browse Pxxx codes or P0B4xx codes.