OBD-II code · Chassis
C0031 Left Front Wheel Speed Sensor Circuit Low
Voltage on the left front wheel speed sensor circuit is below the expected range. The fault is typically caused by a short to ground or an open in the supply line.
Is it safe to drive with C0031?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor wiring shorted to ground
- PossibleSensor coil open internally
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Wheel Speed Sensor Fl, Sensor Wiring, ABS Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.