The wheel speed sensor is responsible for measuring the speed of the wheel and sending this information to the vehicle's anti-lock braking system (ABS). If the wheel speed sensor fails, the ABS cannot properly function, which can cause the rear passenger tire to lock up.
Other possible causes include:
- A faulty ABS module
- A faulty brake caliper
- A faulty brake hose
- A blocked brake line
- Low brake fluid level
- Worn or damaged brake pads