Possible Causes
- Purpose of the DTC
- To detect a harness failure between the engine control module and fuel pump driver module
- Electrical Cause
- Mechanical Cause
- Control Module Signal Name
- EFPC - Output PWM signal from engine control module
- PWM - Input PWM signal to fuel pump driver module
- Monitor Description
- Output PWM signal from engine control module to fuel pump driver module circuit short circuit to power
- Prioritised List of Possible Causes
- The engine control module has detected a vehicle power measurement for a period longer than expected or has detected a vehicle power measurement when another value was expected
- Output PWM signal from engine control module to fuel pump driver module circuit short circuit to power
- Fuel pump driver module failure
- Engine control module failure