Wheel Speed Sensors Supply Circuit High

Where it lives

For C05A3, the circuit described runs through the sensor. The description of C05A3 reports a fault at the sensor.

Check these first

• A short to voltage in the wheel speed sensor supply wire
• A failed wheel speed sensor shorting the shared supply
• A chafed harness shorting the sensor supply to power
• Water in a wheel speed sensor connector bridging the supply
• An ABS module supply fault feeding all wheel speed sensors

What to do next

1. Check each wheel speed sensor connector for water or damage
2. Test the shared sensor supply wire for a short to voltage
3. Unplug one sensor at a time to find the one loading the supply
4. Check the ABS module supply output with a scan tool
5. Replace the wheel speed sensor that shorts the supply
6. Clear the code and retest

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