ChassisC1121
CautionSeverity: Caution - get it checked when you can
Damper solenoid
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?
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 23
| Brand | Code | Description | System |
|---|---|---|---|
| BAIC Motor | C1121 | No Engine Speed Signal Input Brand | Chassis |
| Mercedes-Benz | C1121 | No description available | Chassis |
| Chery | C1121 | Vehicle speed fault Brand | Chassis |
| Daewoo | C1121 | No Vehicle Speed Signal Brand | Chassis |
| DFFS | C1121 | Consistency fault between engine speed and vehicle speed Brand | Chassis |
| DFXK | C1121 | Vehicle speed circuit Brand | Chassis |
| Geely | C1121 | Front Left Wheel Sensor Battery Voltage Low Brand | Chassis |
| GM | C1121 | No description available | Chassis |
| Holden | C1121 | Left Front Dump Solenoid Valve Circuit Brand | Chassis |
| Hyundai | C1121 | No description available | Chassis |
| Isuzu | C1121 | No description available | Chassis |
| Land Rover | C1121 | Damper solenoid Brand | Chassis |
| Mahindra | C1121 | Solenoid OverTemp Dump Front Right Brand | Chassis |
| Maserati | C1121 | No description available | Chassis |
| Mitsubishi | C1121 | No description available | Chassis |
| Opel | C1121 | No description available | Chassis |
| Peugeot | C1121 | No description available | Chassis |
| Saab | C1121 | No description available | Chassis |
| MG (SAIC) | C1121 | HDC Switch Error Brand | Chassis |
| Smart | C1121 | No description available | Chassis |
| Suzuki | C1121 | Right-Front Wheel Speed Sensor or Encoder Signal Performance Brand | Chassis |
| SWM Motor | C1121 | Vehicle speed fault: Within 5 minutes, the engine speed is ≥ 4000 rpm, and the vehicle speed is 0 for 60 seconds Brand | Chassis |
| Tata | C1121 | No description available | 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 C1121 and may be reported by some scan tools.
6Related codes
Browse Cxxx codes or C112xx codes.