Volt

DTC P04C3-P04C6

The hybrid powertrain control module 2 provides a 5V signal through a pull-up resistor to the Fuel Door Lock Position Sensor Circuit. The other end of the Fuel Door Lock Position Sensor Circuit is connected to the Fuel Door Lock Position Sensor in the Fuel Door Status Switch Assembly. The hybrid powertrain control module 2 monitors the voltage on the Fuel Door Lock Position Sensor Circuit. In normal operation, when the Fuel Door Lock moves to the unlocked position, the switch in the Fuel Door Lock Position closes and lowers the voltage on the Fuel Door Lock Position Sensor Circuit.

The hybrid powertrain control module 2 monitors the Fuel Door Lock Position Sensor Circuit for invalid and out of range voltages and for unexpected lock and unlock statuses

The hybrid powertrain control module 2 is awake.

P04C3 00

The hybrid powertrain control module 2 detects the fuel door position sensor signal circuit voltage is mid range between expected high and low voltage values.

P04C4 00

The hybrid powertrain control module 2 detects an unlock condition when there was not a corresponding unlock command.

P04C5 00

The hybrid powertrain control module 2 detects a short to ground in the fuel door lock sensor signal circuit.

P04C6 00

The hybrid powertrain control module 2 detects a short to voltage or an open/high resistance in the fuel door lock sensor signal circuit.

The fuel door lock actuator may malfunction.

DTC P04C3 00, P04C4 00, P04C5 00 and P04C6 00 are type B DTCs

Schematic Reference

Release Systems Schematics : Tailgate Schematics → Release System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Fuel Fill Door Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

1. Vehicle in Service Mode, with the fuel filler door unlocked, verify that the scan tool Fuel Door Lock parameter is UNLOCKED.
2. With the fuel filler door locked, verify that the scan tool Fuel Door Lock parameter is LOCKED.

1. Vehicle OFF, disconnect the harness connector at the B208 fuel door status switch assembly.
2. Test for less than 10 Ω between the ground circuit terminal 4 and ground.

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

3. Vehicle in Service Mode, test for 4.75 -- 5.25 V between the signal circuit terminal 3 and ground.

⇒	If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K114B hybrid powertrain control module 2.

⇒	If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K114B hybrid powertrain control module 2.

4. If all circuits test normal, test or replace the B208 fuel door status switch assembly.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for the hybrid powertrain control module 2 replacement, programming and setup