Sensor Power Supply A Circuit High

Where it lives

For P06B2, the circuit described runs through the sensor. The description of P06B2 reports a fault at the sensor.

Check these first

• A short to voltage in the sensor power A circuit
• A faulty ECM regulator
• A sensor drawing excessive current
• Corroded sensor power A wiring
• A charging system overvoltage

What to do next

1. Monitor the sensor power A voltage live
2. Check the circuit for a short to power
3. Unplug sensors on supply A one at a time
4. Check charging voltage
5. Repair the wiring or replace the ECM
6. Clear the code and retest

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