Engine Controls System: 119308

119308 - P0087

Information saved in
DME

Fault code
119308 - P0087

Fault text
Rail pressure sensor, plausibility: Minimum pressure
undershot

Fault description
The diagnostic function monitors the rail pressure to
determine whether it drops too low during engine operation.

Condition for fault identification
Test condition:
The fault is recognized when the relative rail pressure during
engine operation is > 40 bar and a mixture fault or a fuel
high-pressure fault is present at the same time.
Potential problem source(s):
- Defect in wiring harness between DME and rail-pressure
sensor
- Defective rail-pressure sensor
- Defect in high-pressure system
- Defective DME
Terminal condition: Terminal 15
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- none

Condition for fault memory entry
This fault is logged in the control module's fault memory
immediately.

Action in service
- Check wiring harness between DME and rail-pressure
sensor
- Replace rail-pressure sensor
- Repair problem in high-pressure fuel system
- Replace DME

Fault effect and breakdown warning
Breakdown notice:
Standard EML Text
Possible apparent symptoms:
Reduced power

Driver information
Warning light:
- ECE emissions warning lamp: on
- ECE electronic engine power reduction: on
- CC message: on
- US emissions warning lamp: on
- US electronic engine power reduction: on
- CC message: on

Service instruction
None