Left Front Wheel Speed Sensor Circuit High
The C0037 code means the vehicle's onboard diagnostic system has detected: Left Front Wheel Speed Sensor Circuit High. This is a critical severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $100 - $400 (parts and labor)
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Common Symptoms
- ABS warning light on
- Left Front speed reads abnormally high on scan tool
- Traction control erratic
- ABS activates unexpectedly
Probable Causes (Ranked by Likelihood)
- Shorted left front wheel speed sensor Very High
- Sensor wiring shorted to voltage source High
- Electromagnetic interference near sensor Moderate
- ABS module input circuit fault Low
Step-by-Step Diagnostic Procedure
-
Measure left front sensor output voltage range
-
Check sensor wiring for shorts to power
-
Inspect wiring routing near ignition components
-
Compare sensor readings across all wheels
Frequently Asked Questions
What does code C0037 mean?
C0037 indicates a problem with the left front wheel speed sensor circuit causing high signal output.
Can I drive with code C0037?
You can drive short distances, but ABS and traction control will be disabled. Avoid slippery roads.
How much does it cost to fix C0037?
Wheel speed sensor repairs typically cost $100 to $400 including parts and labor.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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