Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-P008800

Condition
The engine control module (ECM) controls the fuel pressure via the fuel pump (FP) control module using a pulse width modulation (PWM) signal.
The fuel pump (FP) control module then controls the fuel pump (FP) depending on the pressure requested by the engine control module (ECM).
For information about fuel pressure control, see VIDA Design and function.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Actual pressure (gauged pressure from the fuel pressure sensor) becomes too high compared with the requested pressure (engine control module (ECM) target value) for a certain amount of time.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Engine running.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

Substitute value
- Fuel pump (FP) is controlled using a calculated value.

Possible source
- Leakage in the fuel lines.
- Damaged fuel pressure sensor.
- Damaged fuel pump.
- Damaged fuel pump (FP) control module.

Fault symptom[s]
- Malfunction indicator light (MIL), on
- Poor performance
- Engine stalls