P1021

P1021

Diagnosis information - DME V6 DFI

Fuel high-pressure quantity

NOTE: Diagnosis detects a deviation between required and actual values in fuel high-pressure quantity control.

Diagnostic conditions
- Battery positive voltage > 9 V
- Engine start recognized > 5 sec.
- Engine temperature -10 °C ...+100 °C (50 °F ... 212 °F)
- Drive with different load and speed ranges

Possible fault causes
- Quantity control valve faulty (in fuel high-pressure pump)