ChassisC1004

Caution

Severity: Caution - get it checked when you can

ABS operation fault

19 brands affected · Description from BYD data.

Key terms: 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

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?

Caution · drive with care

If the code names an airbag or SRS system, the airbag may not deploy in a crash: have it diagnosed promptly. If it names electric power steering, the assist may fail and the steering can become heavy: stop safely if that happens. If it names the brakes or park brake, have it checked before driving when braking feels abnormal. Otherwise ABS and stability control may be disabled: drive carefully, especially in wet conditions, and have it checked soon.

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 19

Brand	Code	Description	System
BAIC Motor	C1004	ABS operation Brand	Chassis
Mercedes-Benz	C1004	No description available	Chassis
BYD	C1004	ABS operation fault Brand	Chassis
Chery	C1004	Master valve Brand	Chassis
Daewoo	C1004	No description available	Chassis
DFFS	C1004	Brake booster vacuum sensor open circuit Brand	Chassis
Geely	C1004	ABS Operation Brand	Chassis
GM	C1004	No description available	Chassis
Great Wall	C1004	Torque Sensor Auxiliary Circuit Break Or Short Brand	Chassis
Holden	C1004	Left Rear Tire Pressure Sensor Brand	Chassis
Isuzu	C1004	No description available	Chassis
Land Rover	C1004	No description available	Chassis
Maserati	C1004	No description available	Chassis
Opel	C1004	No description available	Chassis
Peugeot	C1004	No description available	Chassis
Saab	C1004	No description available	Chassis
Smart	C1004	No description available	Chassis
Sprinter	C1004	No description available	Chassis
Suzuki	C1004	Rear Parking Sensor OFF Switch LED Malfunction 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 3

These 7-character codes are manufacturer-specific variants of C1004 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	C100400	Steuergerät Ventil EVVR elektrischer Fehler Brand	Chassis
SsangYong	C100400	Body acceleration sensor front left constant signal Brand	Chassis
Mahindra	C10041C	Torque sensor power voltage failure (in crancking condition) Brand	Chassis

6Related codes

Browse Cxxx codes or C100xx codes.