C0040: Right front wheel speed sensor circuit

What does it mean?

System

Chassis (brakes, ABS, steering, suspension)

Type of code

Generic code: means the same on every make.

How urgent?

Have it checked soon. You can usually still drive, but avoid long trips and heavy loads.

Possible causes

• Dirty or faulty wheel speed sensor
• Damaged tone ring or wheel bearing
• Wiring or connector at the wheel

Tip: don’t just clear the code. Clearing a code doesn’t fix the cause. It often comes back, and the stored data that helps us find the cause is then gone.