Left Front Wheel Speed Sensor Circuit Range/Performance
The C0056 code means the vehicle's onboard diagnostic system has detected: Left Front Wheel Speed Sensor Circuit Range/Performance. This is a critical severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $120 - $350 (parts and labor)
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Common Symptoms
- ABS warning light illuminated
- Traction control disabled
- Erratic speedometer readings
- Stability control malfunction indicator
Probable Causes (Ranked by Likelihood)
- Metallic debris contaminating sensor face Very High
- Sensor air gap out of specification High
- Worn wheel bearing affecting tone ring position Moderate
- Cracked or damaged tone ring Low
Step-by-Step Diagnostic Procedure
-
Compare wheel speed data from all four sensors during test drive
-
Clean sensor tip and inspect for debris
-
Measure sensor to tone ring air gap
-
Inspect tone ring for damage or missing teeth
Frequently Asked Questions
What does code C0056 mean?
Code C0056 indicates left front wheel speed sensor circuit range/performance. This is a chassis-related diagnostic trouble code stored in your vehicle's on-board computer.
Can I drive with code C0056?
You can drive short distances to a repair shop, but the affected system is compromised. Avoid highways and harsh conditions.
How much does it cost to fix C0056?
Typical repair costs range from $120 - $350 (parts and labor). The actual cost depends on the root cause, vehicle make and model, and local labor rates. Get a proper diagnosis before replacing parts.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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