ChassisC0037
CautionSeverity: Caution - get it checked when you can
Left Front Wheel Speed Sensor Circuit Low
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 · SAE J2012: the standard generic code list
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 28
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | C0037 | Left Front Wheel Speed Sensor Circuit Low SAE | Chassis |
| BAIC Motor | C0037 | Left Rear Wheel Speed Sensor Brand | Chassis |
| Mercedes-Benz | C0037 | Left Front Wheel Speed Sensor Circuit Low SAE | Chassis |
| BYD | C0037 | High voltage condition Brand | Chassis |
| Chery | C0037 | High voltage condition Brand | Chassis |
| Daewoo | C0037 | System Voltage High Input Brand | Chassis |
| DFFS | C0037 | Left Rear Wheel Speed Sensor Brand | Chassis |
| DFFX | C0037 | Left Rear Wheel Speed Sensor Brand | Chassis |
| DFXK | C0037 | Left Rear Wheel Speed Sensor Brand | Chassis |
| EOBD | C0037 | Left rear wheel speed sensor Brand | Chassis |
| Geely | C0037 | High pressure state Brand | Chassis |
| GM | C0037 | System volage high Brand | Chassis |
| Great Wall | C0037 | Left Rear Wheel Speed Sensor Brand | Chassis |
| Hafei | C0037 | Left Rear Wheel Speed Sensor Brand | Chassis |
| Holden | C0037 | Left Rear Wheel Speed Sensor Circuit Brand | Chassis |
| Honda | C0037 | 62 (Left Rear Wheel Sensor Fault) (Radar Vision Unit) This fault code is caused by another fault and therefore no further diagnosis is required. Please diagnose the other fault codes first, and then clear this fault code. Possible fault location and cause: Left rear wheel sensor fault Brand | Chassis |
| Hyundai | C0037 | Left Front Wheel Speed Sensor Circuit Low SAE | Chassis |
| Isuzu | C0037 | Left Front Wheel Speed Sensor Circuit Low SAE | Chassis |
| Land Rover | C0037 | Left Front Wheel Speed Sensor Circuit Low SAE | Chassis |
| Maserati | C0037 | Left Rear Wheel Speed Sensor Incorrect Component Installed Brand | Chassis |
| Opel | C0037 | System volage high Brand | Chassis |
| Peugeot | C0037 | Left Front Wheel Speed Sensor Circuit Low SAE | Chassis |
| Proton | C0037 | Left Front Wheel Speed Sensor Circuit Low SAE | Chassis |
| Saab | C0037 | System Volage High Brand | Chassis |
| MG (SAIC) | C0037 | Left Rear Wheel Speed Sensor Brand | Chassis |
| Subaru | C0037 | RL Hold Valve malfunction Brand | Chassis |
| Tata | C0037 | Left Front Wheel Speed Sensor Circuit Low SAE | Chassis |
| Toyota | C0037 | Left rear wheel speed sensor: (signal error) out of range, lost, noise, intermittent 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 14
These 7-character codes are manufacturer-specific variants of C0037 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | C003700 | The left rear wheel speed sensor has a malfunction. Brand | Chassis |
| Mercedes-Benz | C003704 | The left rear wheel speed sensor has a malfunction. There is an internal fault. Brand | Chassis |
| Mercedes-Benz | C003708 | No description available | Chassis |
| Smart | C003708 | No description available | Chassis |
| Mercedes-Benz | C003709 | The left rear wheel speed sensor has a malfunction. There is a component fault. Brand | Chassis |
| Mahindra | C003712 | Rear Left Wheel Speed Sensor - Short to Battery Brand | Chassis |
| Mahindra | C003714 | Rear Left Wheel Speed Sensor - Short to Ground or Open Brand | Chassis |
| Mahindra | C00371C | Rear Left Wheel Speed Sensor Short to another WSS Brand | Chassis |
| Mercedes-Benz | C003725 | The left rear wheel speed sensor has a malfunction. There is a faulty signal waveform. Brand | Chassis |
| Mercedes-Benz | C003729 | The left rear wheel speed sensor has a malfunction. There is an invalid signal. Brand | Chassis |
| Mercedes-Benz | C00374A | The left rear wheel speed sensor has a malfunction. The wrong component is installed. Brand | Chassis |
| Mahindra | C003764 | Rear Left WSS Plausibility error Brand | Chassis |
| Mercedes-Benz | C0037E0 | No description available | Chassis |
| Mercedes-Benz | C0037FA | The left rear wheel speed sensor has a malfunction. Brand | Chassis |
6Related codes
Browse Cxxx codes or C003xx codes.