P1291

27E5 - P1291

Information saved in
DME

Fault code
27E5 - P1291

Fault text
Reduction, el. fuel pump activation

Fault description
Fuel Volume Regulator Output Stage Over Temperature

Condition for fault identification
Test condition:
pks_can_diag_st == EKP_UEBERTEMP
Terminal condition: none
Voltage condition:
none

Condition for fault memory entry
1

Action in service
1. Clear fault memory,
2. Use tester to trigger electric fuel pump module at pulse-
duty factor of 100 %,
3. Replace the electric fuel pump module if the error is
registered again during the test.
Info: In this case the EKP electric fuel pump module's
temperature has exceeded an internal temperature threshold.
If this

Fault effect and breakdown warning
CC message
Engine speed limited
Reduced power

Driver information
Warning light:
MIL, EML, CC message, backup program

Service instruction
none