45A0 - P0088 (DDE)

45A0 - P0088

Information saved in
DDE

Fault code
45A0 - P0088

Fault text
DDE: Rail-pressure plausibility delivery-controlled:
Maximum pressure exceeded

Fault description
Monitoring maximum rail pressure with fuel-quantity
control valve regulating fuel rail pressure. The diagnostic
trouble code is logged when the monitored rail pressure is
higher than the limit 1750 bar.

Condition for fault identification
Test condition:
The test routine runs only when the following conditions are
satisfied:
- Rail-pressure control from fuel-quantity control valve is
active.
- Monitoring is enabled.
Voltage condition:
The test routine runs only when the following conditions are
satisfied:
- Rail-pressure control from fuel-quantity control valve is
active.
- Monitoring is enabled.

Condition for fault memory entry
Debounce (240 ms)

Action in service
Check the following potential problem sources:
- Possible faults in fuel pre-supply system: pre-supply
pressure is too high.
- Fuel-quantity control valve sticking in open position.
- Fuel-quantity control valve has no power owing to
electrical malfunction.
Investigate potential problem sources, conduct rail-pressure
control system test.

Fault effect and breakdown warning
Output governed.
Proceed to the nearest BMW Service facility.

Driver information
Warning light:
MIL_SVS

Service instruction
none