ChassisC1001

Caution

Severity: Caution - get it checked when you can

Tandem brake master cylinder, pressure: Plausibility

22 brands affected · Description from BMW 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

Safety: This code relates to the braking system. Have braking checked promptly.

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

The braking system may be affected. Have it checked promptly; if the pedal feels abnormal, the car pulls when braking, or a brake warning light is on, stop safely.

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 22

Brand	Code	Description	System
BAIC Motor	C1001	KL30 supply voltage Brand	Chassis
Mercedes-Benz	C1001	No description available	Chassis
BMW	C1001	Tandem brake master cylinder, pressure: Plausibility Brand	Chassis
BYD	C1001	ECU supply voltage fault Brand	Chassis
Chery	C1001	No description available	Chassis
Daewoo	C1001	No description available	Chassis
DFFS	C1001	Stall fault Brand	Chassis
Geely	C1001	KL30 Supply Voltage Brand	Chassis
GM	C1001	No description available	Chassis
Great Wall	C1001	KL30 voltage fault Brand	Chassis
Holden	C1001	Left Front Tire Pressure Sensor Brand	Chassis
Hyundai	C1001	No description available	Chassis
Isuzu	C1001	No description available	Chassis
Land Rover	C1001	No description available	Chassis
Maserati	C1001	ECU fault Brand	Chassis
Opel	C1001	No description available	Chassis
Peugeot	C1001	No description available	Chassis
Saab	C1001	No description available	Chassis
MG (SAIC)	C1001	CAN Hardware Error Brand	Chassis
Smart	C1001	No description available	Chassis
Sprinter	C1001	No description available	Chassis
Suzuki	C1001	Sonar Control Module Internal Failure 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 15

These 7-character codes are manufacturer-specific variants of C1001 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	C100100	No description available	Chassis
Sprinter	C100100	No description available	Chassis
SsangYong	C100100	Body acceleration sensor front left short to ground Brand	Chassis
Mahindra	C100117	Over range failure of Main Torque sensor output voltage Brand	Chassis
Mercedes-Benz	C10012A	No description available	Chassis
Volvo	C100154	When the camera's calibration cycle is interrupted, DTC FSM- is generated again Brand	Chassis
Mercedes-Benz	C100155	No description available	Chassis
Mercedes-Benz	C100165	Network: Body Controler invalid value/data corrupt: FW_ReverseGearHigh Brand	Chassis
Mercedes-Benz	C100177	Wss fault due to missing wheel speed Brand	Chassis
Mercedes-Benz	C100178	Wss fault due to missing wheel speed Brand	Chassis
Mercedes-Benz	C100179	Wss fault due to missing wheel speed Brand	Chassis
Mercedes-Benz	C10017A	Wss fault due to missing wheel speed Brand	Chassis
Mercedes-Benz	C100195	Network: External: FW_RBAPPLIF_XPASSTimeOut Brand	Chassis
Mercedes-Benz	C1001A3	Internal: FW_RBWSSGTMMonMuxSigError Brand	Chassis
Mercedes-Benz	C1001E7	SAS: Steering angle sensor (SAS) configuration: FW_Sas_CondActiveAboveThr Brand	Chassis

6Related codes

Browse Cxxx codes or C100xx codes.