OBD-II code · Chassis
C0042 Right Front Wheel Speed Sensor Circuit Low
Voltage in the right front wheel speed sensor circuit is below threshold, typically a short to ground.
Is it safe to drive with C0042?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWiring shorted to ground
- PossibleSensor coil open
- 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 Fr, Sensor Wiring
Related codes
- C003FWheel Speed Sensors Rotation Direction Correlation
- C0040Right Front Wheel Speed Sensor Circuit Malfunction
- C0041Right Front Wheel Speed Sensor Circuit Range/Performance
- C0043Right Front Wheel Speed Sensor Circuit High
- C0044Right Front Wheel Speed Sensor Signal Erratic
- C0045Left Rear Wheel Speed Sensor Circuit Malfunction
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.