OBD Guide
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C1412

Rear Speed Sensor Left Performance

C1412 is an OBD-II diagnostic trouble code meaning: Rear Speed Sensor Left Performance. Common causes: damage to the wheel speed sensor, sensor contamination. Estimated repair cost: $56–167.

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

Symptoms

  • ABS/ESP indicator is on
  • Incorrect operation of the ABS system
  • Disabling the ESP system
  • Errors in cruise control operation

Causes

  • Damage to the wheel speed sensor
  • Sensor contamination
  • Open or shorted wiring harness
  • Malfunction of the ABS/ESP control unit
  • Problems with the ring gear on the hub

How to Fix

  1. Check the condition of the rear left wheel speed sensor
  2. Clean the sensor from dirt
  3. Check the integrity of the wiring harness
  4. Check sensor resistance
  5. Replace sensor if necessary
  6. Check the ring gear on the hub

Related codes

C1410C1411C1413C1414

FAQ

What does the C1412 code mean?

C1412 is an OBD-II diagnostic trouble code that indicates: Rear Speed Sensor Left Performance

What causes a C1412 error code?

The most common causes of C1412 include: Damage to the wheel speed sensor; Sensor contamination; Open or shorted wiring harness; Malfunction of the ABS/ESP control unit.

How do I fix a C1412 diagnostic trouble code?

To fix C1412: Check the condition of the rear left wheel speed sensor. Clean the sensor from dirt. Check the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1412?

Limited driving only, diagnose soon

How much does it cost to fix C1412?

The estimated repair cost for C1412 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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