OBD Guide
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C1014

Left Front Wheel Speed Comparative Performance

C1014 is an OBD-II diagnostic trouble code meaning: Left Front Wheel Speed Comparative Performance. Common causes: left front wheel speed sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • ABS or ESP indicator is on
  • Unstable ABS operation
  • Loss of traction on slippery surfaces
  • Incorrect speedometer readings

Causes

  • Left front wheel speed sensor malfunction
  • Open or short circuit in wiring harness
  • Contamination or damage to the ring gear
  • Problems with the ABS/ESP control unit

How to Fix

  1. Check the condition of the left front wheel speed sensor
  2. Inspect the wiring harness for damage
  3. Clean or replace ring gear
  4. Check sensor resistance and voltage
  5. If necessary, replace the sensor or wiring harness

Related codes

C1015C1016C1017

FAQ

What does the C1014 code mean?

C1014 is an OBD-II diagnostic trouble code that indicates: Left Front Wheel Speed Comparative Performance

What causes a C1014 error code?

The most common causes of C1014 include: Left front wheel speed sensor malfunction; Open or short circuit in wiring harness; Contamination or damage to the ring gear; Problems with the ABS/ESP control unit.

How do I fix a C1014 diagnostic trouble code?

To fix C1014: Check the condition of the left front wheel speed sensor. Inspect the wiring harness for damage. Clean or replace ring gear. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1014?

Limited driving only, diagnose soon

How much does it cost to fix C1014?

The estimated repair cost for C1014 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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