Fuel System - Diagnosis For DTC FC 2AAE

SI B 13 09 09
Fuel Systems

January 2010
Technical Service

SUBJECT
S63 - Diagnosis for FC 2AAE

MODEL
E70 (X5 M) with S63 engine
E71 (X6 M) with S63 engine

SITUATION

Fault code 2AAE (Fuel pump over-temperature; currently not present) is stored in the DME. The fault does not cause the Service Engine Soon illumination or there are no any drivability complaints.

INFORMATION

Fault code 2AAE (if stored alone, without any other faults related to the low fuel pressure system) is caused by DME diagnostic sensitivity, and should not be considered an indication of low-pressure system malfunction.

Do not replace the low-pressure system components (e.g., EKP module, pressure sensor, electric fuel pump or filter) in order to address FC 2AAE.

The low fuel pressure system should be diagnosed (using the appropriate ISTA D test module) only if fault code 2AAE (Fuel pump over-temperature) is stored together with other low-pressure faults (e.g., 2A28 - "Fuel low pressure system" or EKP control-related faults 6516/6517/6296).

WARRANTY INFORMATION

For information only