OBD2 code C0031: Left Front Wheel Speed Sensor Circuit Low
Voltage on the left front wheel speed sensor circuit is below the expected range.
Detected Root Component
Chassis Component
Observed Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Possible Causes
- Sensor wiring shorted to ground
- Sensor coil open internally
- Connector pins corroded - high contact resistance
Tools Required
Interactive Diagnostic
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Parts likely to be the cause (Capteur ABS)
Capteur ABS
Photo d'illustration : Capteur ABS
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Frequently asked questions about code C0031
What does code C0031 mean? ▾
OBD2 code C0031: Left Front Wheel Speed Sensor Circuit Low. Voltage on the left front wheel speed sensor circuit is below the expected range.
What are the symptoms of code C0031? ▾
Code C0031 may cause: ABS warning light on, ESC/stability control deactivated, Possible reduced brake assist, Speedometer may behave erratically. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code C0031? ▾
The most common causes of code C0031 are: Sensor wiring shorted to ground, Sensor coil open internally, Connector pins corroded - high contact resistance. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code C0031? ▾
Yes, code C0031 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.
How do I fix code C0031? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Sensor wiring shorted to ground, Sensor coil open internally, Connector pins corroded - high contact resistance. Difficulty: Medium · Estimated time: 30-60min.