PowertrainP1A1B

Serious

Severity: Serious - have it checked soon

Brake System Control Module - Forced Engine Running

9 brands affected · Description from Land Rover data.

Key terms: Control module: a small computer that runs one part of the car · Powertrain: engine, transmission and emissions

Safety: This code relates to the braking system or brake assist. Braking may be affected.

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?

Serious · drive with care

Have it checked immediately: brakes or brake assistance may be affected. Do not drive if the pedal feels soft or hard, the car pulls when braking, or the brake warning light is on.

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 9

Brand	Code	Description	System
BYD	P1A1B	BIC6 temperature sampling circuit fault Brand	Powertrain
Chery	P1A1B	DC busbar undervoltage Brand	Powertrain
DFXK	P1A1B	VLC control module ROM abnormal Brand	Powertrain
EOBD	P1A1B	Laddenhet 3 Brand	Powertrain
Land Rover	P1A1B	Brake System Control Module - Forced Engine Running Brand	Powertrain
Mitsubishi	P1A1B	Motor drive voltage low Brand	Powertrain
Peugeot	P1A1B	No description available	Powertrain
Proton	P1A1B	Motor drive voltage low Brand	Powertrain
MG (SAIC)	P1A1B	Tilt Sensor Fault 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.

5Related codes

Browse Pxxx codes or P1A1xx codes.