ChassisC057A

Serious

Severity: Serious - have it checked soon

Brake Booster Temperature Sensor B Circuit High

11 brands affected · Generic SAE J2012 description.

Key terms: Boost pressure: extra air pressure made by a turbo or supercharger · ABS: anti-lock braking, which stops the wheels locking · Stability control: helps stop the car skidding · Wheel speed sensor: measures how fast each wheel turns · SAE J2012: the standard generic code list

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

1What it means in plain English

A chassis system has a fault, usually ABS, traction control or stability control, but some makes use this range for airbags, electric power steering or park brakes.

2Common causes

Faulty wheel speed sensor
Damaged sensor ring or wiring
Faulty ABS module
Low brake fluid
Wheel bearing damage

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 11

Brand	Code	Description	System
Ashok Leyland CV	C057A	SAE-J1939 Interface. CAN Open Circuit Brand	Chassis
Daewoo	C057A	Brake Booster Temperature Sensor B Circuit High SAE	Chassis
EOBD	C057A	Sirkuit sensor suhu booster rem 'B' tinggi Brand	Chassis
GM	C057A	Brake Booster Temperature Sensor B Circuit High SAE	Chassis
Holden	C057A	Brake Booster Temperature Sensor B Circuit High SAE	Chassis
Land Rover	C057A	Brake Booster Temperature Sensor 'B' Circuit High - Circuit Short To Battery Or Open Brand	Chassis
Opel	C057A	Brake Booster Temperature Sensor B Circuit High SAE	Chassis
Peugeot	C057A	Brake Booster Temperature Sensor B Circuit High SAE	Chassis
Saab	C057A	Brake Booster Temperature Sensor B Circuit High SAE	Chassis
Subaru	C057A	Brake Booster Temperature Sensor B Circuit High SAE	Chassis
Toyota	C057A	Brake booster temperature sensor 'B' circuit high Brand	Chassis

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 2

These 7-character codes are manufacturer-specific variants of C057A and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	C057A00	Level not adjustable Brand	Chassis
Mercedes-Benz	C057A15	Brake Booster Temperature Sensor'B'Circuit High. Circuit Short To Battery or Brand	Chassis

6Related codes

Browse Cxxx codes or C057xx codes.