C0040 - Right Front Wheel Speed Sensor Circuit

Wheel speed sensor circuit fault (RF).

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Code Overview

Wheel speed sensor circuit fault (RF).

Common Causes

• Wheel speed sensor failure
• Wiring damage at wheel
• Tone ring damage/debris

Diagnostic Steps

1. Inspect sensor/harness near wheel
2. Clean sensor tip (if accessible)
3. Verify sensor signal on scan tool
4. Inspect tone ring

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