C0037
Left Rear Wheel Speed Sensor
C0037 is an OBD-II diagnostic trouble code meaning: Left Rear Wheel Speed Sensor. Common causes: wheel speed sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $33–167.
Symptoms
- ABS warning light is on
- Disabling ESP/TCS systems
- Incorrect operation of the speedometer (in some models)
- Feeling of vibration when braking (if ABS is unstable)
Causes
- Wheel speed sensor malfunction
- Open or short circuit in wiring harness
- The tone ring is damaged or dirty
- Corrosion of sensor connector contacts
- Problems with the gap between the pickup and the tone ring
- ABS control unit malfunction
How to Fix
- Visually inspect the sensor and wiring harness for damage
- Checking the resistance and signal of the sensor
- Diagnosing sensor circuits with a multimeter or oscilloscope
- Inspect the tone ring for damage or dirt
- Checking the gap between the pickup and the tone ring
- Replace the sensor or repair the wiring harness if necessary
- Cleaning the connector contacts
- Erasing the error code and checking the system operation
Related codes
Error C0037 by Vehicle Brand
FAQ
What does the C0037 code mean?
C0037 is an OBD-II diagnostic trouble code that indicates: Left Rear Wheel Speed Sensor
What causes a C0037 error code?
The most common causes of C0037 include: Wheel speed sensor malfunction; Open or short circuit in wiring harness; The tone ring is damaged or dirty; Corrosion of sensor connector contacts.
How do I fix a C0037 diagnostic trouble code?
To fix C0037: Visually inspect the sensor and wiring harness for damage. Checking the resistance and signal of the sensor. Diagnosing sensor circuits with a multimeter or oscilloscope. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0037?
Do not drive — repair immediately
How much does it cost to fix C0037?
The estimated repair cost for C0037 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat