OBD Guide
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C1145

Right Front Wheel Speed Sensor Input Circuit Failure

C1145 is an OBD-II diagnostic trouble code meaning: Right Front Wheel Speed Sensor Input Circuit Failure. Common causes: broken or damaged wiring harness, wheel speed sensor malfunction. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • ABS/ESP indicator is on
  • ABS system not working
  • Incorrect operation of the ESP system
  • Reduced braking performance

Causes

  • Broken or damaged wiring harness
  • Wheel speed sensor malfunction
  • Problems with the sensor connector
  • Contamination or damage to the ring gear

How to Fix

  1. Check the integrity of the wiring harness
  2. Inspect the sensor connector for damage
  3. Check sensor resistance
  4. Clean or replace ring gear
  5. Replace the wheel speed sensor if necessary

Related codes

C1140C1146C1147

FAQ

What does the C1145 code mean?

C1145 is an OBD-II diagnostic trouble code that indicates: Right Front Wheel Speed Sensor Input Circuit Failure

What causes a C1145 error code?

The most common causes of C1145 include: Broken or damaged wiring harness; Wheel speed sensor malfunction; Problems with the sensor connector; Contamination or damage to the ring gear.

How do I fix a C1145 diagnostic trouble code?

To fix C1145: Check the integrity of the wiring harness. Inspect the sensor connector for damage. Check sensor resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1145?

Limited driving only, diagnose soon

How much does it cost to fix C1145?

The estimated repair cost for C1145 is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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