14 Volt Power Module Current Sensor B Circuit Intermittent

Where it lives

For P0CA0, the circuit described runs through the sensor. The description of P0CA0 reports a fault at the sensor.

Check these first

• A loose current sensor B connector
• Chafed current sensor B wiring
• A current sensor B failing when hot
• An intermittent 14 volt power module fault
• Electrical noise on the current sensor B line

What to do next

1. Road test and watch 14 volt power module current sensor B
2. Wiggle test the current sensor B connector and harness
3. Heat the power module area and watch for a dropout
4. Inspect the current sensor B wiring for chafing
5. Replace current sensor B if the signal cuts out
6. Clear the code and retest

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