C0057 DTC: Left Rear Wheel Speed Sensor Circuit Range/Performance
What Does C0057 Mean?
Diagnostic Trouble Code (DTC) C0057 indicates that the ABS control module has detected that the signal from the left rear wheel speed sensor is outside the expected operating range or does not match the performance of the other wheel speed sensors. The circuit may still function electrically, but the signal is inaccurate, unstable, or inconsistent, causing improper ABS, Traction Control (TCS), and Electronic Stability Control (ESC) operation.
Symptoms
- ABS warning light illuminated
- Traction Control (TCS) warning light ON
- Electronic Stability Control (ESC) warning
- Unexpected ABS activation during braking
- Reduced ABS performance
- Traction Control disabled
- Cruise control may be disabled on some vehicles
- Additional ABS-related DTCs stored
Common Causes
- Faulty left rear wheel speed sensor
- Damaged or cracked tone ring (reluctor ring)
- Incorrect sensor air gap
- Excessive wheel bearing play
- Metal debris attached to the magnetic sensor
- Damaged wiring harness
- Loose or corroded electrical connector
- Faulty ABS control module (rare)
Typical Diagnostic Flow
How to Diagnose C0057
- Read ABS fault codes using a professional scan tool.
- Monitor live wheel speed data while driving.
- Compare the left rear wheel speed with the other wheel speed sensors.
- Inspect the tone ring for damage, cracks, rust, or missing teeth.
- Verify the sensor air gap meets manufacturer specifications.
- Inspect the wheel bearing for excessive play.
- Check the wiring harness and connector for damage, corrosion, or loose terminals.
- Clean any metal debris from the magnetic sensor.
Typical Values
- All wheel speed sensors should display nearly identical wheel speeds during straight-line driving.
- Unstable or inconsistent readings indicate a sensor performance or mechanical problem.
- Actual specifications vary by vehicle manufacturer.
Estimated Repair Cost
- Wheel speed sensor replacement: $70–250
- Wiring repair: $50–200
- Connector replacement: $30–120
- Tone ring replacement: $80–300
- Wheel bearing replacement: $150–500
- ABS module replacement: $400–1,200
Related DTCs
- C0052
- C0053
- C0054
- C0055
- C0056
Frequently Asked Questions
Can I drive with C0057?
Yes. Normal braking remains available, but the ABS, Traction Control, and Stability Control systems may not function correctly until the fault is repaired.
What is the most common cause of C0057?
The most common causes are a faulty left rear wheel speed sensor, damaged tone ring, excessive wheel bearing play, metal contamination on the sensor, or damaged wiring and connectors.
Will clearing the DTC permanently fix C0057?
No. Clearing the code only removes it temporarily. If the underlying performance problem remains, the ABS control module will detect the fault again during the next drive cycle.