Battery Charger A Input Voltage Sensor C Circuit Range/Performance

Where it lives

For P0EFC, start at the sensor the description names.

Check these first

• A charger A input voltage sensor C giving a drifting signal
• High resistance in the sensor C reference circuit
• A charger A input voltage that is unstable
• A poor ground at the sensor C

What to do next

1. Read charger A input voltage sensor C on a scan tool
2. Compare the sensor C reading to a meter at the charger
3. Test the sensor C reference and ground
4. Check charger A input voltage for fluctuation
5. Replace the voltage sensor C if the supply tests good
6. Clear the code and retest

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