ChassisC0594

Serious

Severity: Serious - have it checked soon

Brake booster motor 'A' performance

12 brands affected · Description from Toyota data.

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

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 12

Brand	Code	Description	System
Ashok Leyland CV	C0594	D - Injector High Circuit Cylinder4 Brand	Chassis
Daewoo	C0594	No description available	Chassis
EOBD	C0594	Performa motor booster rem 'A' Brand	Chassis
GM	C0594	Right rear actuator circuit open Brand	Chassis
Holden	C0594	No description available	Chassis
Land Rover	C0594	Brake Booster Motor 'A' Performance Brand	Chassis
Opel	C0594	Right rear actuator circuit open Brand	Chassis
Peugeot	C0594	No description available	Chassis
Saab	C0594	Right Rear Actuator Circuit Open Brand	Chassis
Subaru	C0594	No description available	Chassis
Suzuki	C0594	No description available	Chassis
Toyota	C0594	Brake booster motor 'A' performance 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 9

These 7-character codes are manufacturer-specific variants of C0594 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	C059400	Electric motor A at the brake booster has a malfunction. Brand	Chassis
Mercedes-Benz	C059401	Electric motor A at the brake booster has a malfunction. There is a general electrical fault. Brand	Chassis
Mercedes-Benz	C059409	Electric motor A at the brake booster has a malfunction. There is a component fault. Brand	Chassis
Mercedes-Benz	C05942D	Electric motor A at the brake booster has a malfunction. Brand	Chassis
Mercedes-Benz	C05944B	Electric motor A at the brake booster has a malfunction. There is a fault due to overtemperature. Brand	Chassis
Mercedes-Benz	C059456	Electric motor A at the brake booster has a malfunction. An incorrect or incompatible configuration was detected. Brand	Chassis
Mercedes-Benz	C059491	Brake Booster Motor A Performance. The parameter is outside the permissible range. Brand	Chassis
Mercedes-Benz	C059496	Electric motor A at the brake booster has a malfunction. There is an internal component fault. Brand	Chassis
Mercedes-Benz	C059498	Electric motor A at the brake booster has a malfunction. The component or the system has overtemperature. Brand	Chassis

6Related codes

Browse Cxxx codes or C059xx codes.