OBD Guide
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C102B

Right Rear Wheel Speed Sensor Circuit

C102B is an OBD-II diagnostic trouble code meaning: Right Rear Wheel Speed Sensor Circuit. Common causes: broken or damaged sensor wires, wheel speed sensor malfunction. 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
  • Disabling the ABS or ESP system
  • Incorrect speedometer readings
  • Problems with cruise control

Causes

  • Broken or damaged sensor wires
  • Wheel speed sensor malfunction
  • Wiring harness damage
  • Short circuit in the circuit
  • Problems with sensor connectors

How to Fix

  1. Check the integrity of the sensor wires
  2. Check sensor connectors for corrosion or damage.
  3. Check the resistance of the wheel speed sensor
  4. Replace the wheel speed sensor if necessary
  5. Check the operation of the ABS/ESP system after repair

Related codes

C102AC102CC102D

FAQ

What does the C102B code mean?

C102B is an OBD-II diagnostic trouble code that indicates: Right Rear Wheel Speed Sensor Circuit

What causes a C102B error code?

The most common causes of C102B include: Broken or damaged sensor wires; Wheel speed sensor malfunction; Wiring harness damage; Short circuit in the circuit.

How do I fix a C102B diagnostic trouble code?

To fix C102B: Check the integrity of the sensor wires. Check sensor connectors for corrosion or damage.. Check the resistance of the wheel speed sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C102B?

Limited driving only, diagnose soon

How much does it cost to fix C102B?

The estimated repair cost for C102B is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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