OBD Guide

C066C

Right Rear Wheel Speed Sensor B Incorrect Component Installed

C066C is an OBD-II diagnostic trouble code meaning: Right Rear Wheel Speed Sensor B Incorrect Component Installed. Common causes: incorrect wheel speed sensor installed, damaged or incompatible wiring harness. Estimated repair cost: $22–56.

Severity
⚠️ Medium
Approx. repair cost
$22–56 (est.)

Symptoms

  • Incorrect operation of ABS and ESP
  • The ABS fault light or the check engine light comes on
  • Loss of wheel speed data in diagnostic equipment

Causes

  • Incorrect wheel speed sensor installed
  • Damaged or incompatible wiring harness
  • ABS control unit software error

How to Fix

  1. Check the condition of the right rear wheel speed sensor
  2. Make sure the correct sensor is installed
  3. Check wiring harness for damage
  4. Update ABS control unit software (if necessary)

Related codes

Error C066C by Vehicle Brand

FAQ

What does the C066C code mean?

C066C is an OBD-II diagnostic trouble code that indicates: Right Rear Wheel Speed Sensor B Incorrect Component Installed

What causes a C066C error code?

The most common causes of C066C include: Incorrect wheel speed sensor installed; Damaged or incompatible wiring harness; ABS control unit software error.

How do I fix a C066C diagnostic trouble code?

To fix C066C: Check the condition of the right rear wheel speed sensor. Make sure the correct sensor is installed. Check wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

How much does it cost to fix C066C?

The estimated repair cost for C066C is $22–56. Actual cost depends on your vehicle, location, and labor rates.

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