Brake Pressure Sensor M Circuit High

Where it lives

For C064A, the circuit described runs through the sensor. The description of C064A reports a fault at the sensor.

Check these first

• A short to voltage in the brake pressure sensor M signal wire
• A brake pressure sensor M that failed high
• A reference voltage fault feeding brake pressure sensor M
• Corrosion or water in the brake pressure sensor M connector
• An ABS module that reads brake pressure sensor M out of range

What to do next

1. Read brake pressure sensor M with a scan tool
2. Test the brake pressure sensor M signal wire for a short to voltage
3. Check the reference voltage at brake pressure sensor M
4. Inspect the brake pressure sensor M connector for corrosion or water
5. Replace brake pressure sensor M if the signal stays high
6. Clear the code and retest

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