Sensor Reference Voltage E Circuit Range/Performance

Where it lives

For P06D5, the part to look at first is the sensor named here.

Check these first

• An unstable E reference voltage
• A corroded E circuit connector
• A failed sensor on the E circuit
• A weak battery
• A faulty ECM

What to do next

1. Log the E reference voltage for drift
2. Inspect the E circuit wiring and connectors
3. Isolate sensors on the E circuit one at a time
4. Check battery and charging
5. Repair the wiring or replace the ECM
6. Clear the code and retest

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