C051A

Left Rear Wheel Speed Sensor - Mechanical

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–89 (est.)

Symptoms

ABS/ESP indicator is on
Cruise control not working
Incorrect operation of the anti-lock braking system
Errors related to ABS in the ECU memory

Causes

Physical damage to the wheel speed sensor
Contamination or damage to the ring gear on the hub
Sensor loosening
Wheel bearing wear affecting sensor performance
Problems with the sensor wiring harness

How to Fix

Visual inspection of the sensor and its mounting
Checking the condition of the ring gear
Checking the integrity of the wiring harness
Testing the sensor with a multimeter or oscilloscope
Replacing the sensor or repairing damaged elements

Related codes

C051B C051C C051D