OBD Codes

C0022

Left Rear Wheel Speed Sensor Circuit Low

Moderatesensor

Overview

The C0022 diagnostic trouble code means the chassis control module has identified a left rear wheel speed sensor circuit low problem. This code indicates that a chassis sensor or its circuit is not providing expected readings to the ABS/stability control system. Accurate sensor data is essential for the proper operation of anti-lock brakes, traction control, and electronic stability control, and a fault in this circuit can cause these safety systems to be disabled.

Symptoms

  • Loss of anti-lock braking function
  • Traction control warning light on
  • Speedometer reading erratically or showing zero
  • Cruise control will not engage

Common Causes

  • Damaged wheel bearing causing sensor misalignment
  • Tire pressure monitor sensor battery depleted
  • Faulty steering angle sensor
  • Damaged ride height sensor or linkage

Diagnosis Steps

  1. 1Connect an OBD-II scanner and read all stored chassis trouble codes and freeze frame data
  2. 2Monitor wheel speed sensor signals using scan tool live data while driving
  3. 3Inspect the affected sensor and its wiring connector for damage or corrosion
  4. 4Check the sensor air gap and tone ring for damage, debris, or excessive wear
  5. 5Test the sensor resistance and voltage output with a multimeter; compare to specifications

Estimated Repair Cost

$100$500

Cost varies by vehicle, location, and repair shop. Includes parts and labor.

Commonly Affected Vehicles

Hyundai ElantraSubaru OutbackVolkswagen JettaNissan Rogue

Related Codes

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Frequently Asked Questions

The most common causes are a faulty sensor, damaged tone ring, excessive air gap, metallic debris on the sensor tip, corroded wiring, or a worn wheel bearing that allows the sensor to lose alignment with the tone ring.