ChassisC1012
CautionSeverity: Caution - get it checked when you can
Tandem brake master cylinder, pressure sensor 1: General electrical fault
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?
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 | C1012 | Brake Warning Lamp Malfunction Brand | Chassis |
| Mercedes-Benz | C1012 | No description available | Chassis |
| BMW | C1012 | Tandem brake master cylinder, pressure sensor 1: General electrical fault Brand | Chassis |
| BYD | C1012 | Left rear pressure monitor ID lost Brand | Chassis |
| Daewoo | C1012 | No description available | Chassis |
| DFFS | C1012 | BSG controller over temperature Brand | Chassis |
| Geely | C1012 | Reverse gear implausible Brand | Chassis |
| GM | C1012 | No description available | Chassis |
| Great Wall | C1012 | ECU drive circuit fault Brand | Chassis |
| Holden | C1012 | Undetermined Tire Pressure Sensor Brand | Chassis |
| Hyundai | C1012 | No description available | Chassis |
| Isuzu | C1012 | No description available | Chassis |
| Land Rover | C1012 | Brake Pedal Feel Simulator Cut-off Valve Solenoid Brand | Chassis |
| Mahindra | C1012 | Defective ROM sum check (ROM sum checking failure) Brand | Chassis |
| Maserati | C1012 | Vehicle acceleration or deceleration excess Brand | Chassis |
| Opel | C1012 | No description available | Chassis |
| Peugeot | C1012 | No description available | Chassis |
| Saab | C1012 | No description available | Chassis |
| MG (SAIC) | C1012 | Wheel Speed Sensor front Left - other Brand | Chassis |
| Smart | C1012 | No description available | Chassis |
| Sprinter | C1012 | No description available | Chassis |
| Suzuki | C1012 | Rear Right Inner Sonar Power Supply Circuit Shorted to Ground 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 16
These 7-character codes are manufacturer-specific variants of C1012 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | C101200 | Steuergerät Ventil LPF2 elektrischer Fehler Brand | Chassis |
| SsangYong | C101200 | Body acceleration sensor front right short to battery or open Brand | Chassis |
| SsangYong | C101202 | Wheel speed sensor front-LH air gap Brand | Chassis |
| Mercedes-Benz | C101207 | The right rear brake caliper has a malfunction. Counter byte when corresponding SAE Code is used more than one time Brand | Chassis |
| Mercedes-Benz | C101209 | The right rear brake caliper has a malfunction. Counter byte when corresponding SAE Code is used more than one time Brand | Chassis |
| Volkswagen | C101214 | Fault Control unit left channel voltage supply Brand | Chassis |
| Mercedes-Benz | C101219 | The right rear brake caliper has a malfunction. The limit value for current has been exceeded. Brand | Chassis |
| Volkswagen | C101229 | Fault Control unit left channel voltage supply Brand | Chassis |
| Mercedes-Benz | C10124B | The right rear brake caliper has a malfunction. There is a fault due to overtemperature. Brand | Chassis |
| Mercedes-Benz | C101261 | The right rear brake caliper has a malfunction. The signal calculation is faulty. Brand | Chassis |
| Mercedes-Benz | C101271 | Actuator blocked Brand | Chassis |
| Mercedes-Benz | C101277 | Actuator motor warning Brand | Chassis |
| Mercedes-Benz | C101281 | Malfunction actuator motor Brand | Chassis |
| Mercedes-Benz | C101295 | The right rear brake caliper has a malfunction. The mechanical setup is not OK. Brand | Chassis |
| Mercedes-Benz | C101296 | The right rear brake caliper has a malfunction. There is an internal component fault. Brand | Chassis |
| Mercedes-Benz | C1012E0 | The right rear brake caliper has a malfunction. Counter byte when corresponding SAE Code is used more than one time Brand | Chassis |
6Related codes
Browse Cxxx codes or C101xx codes.