Fuel System - DTC 4B1C Fuel Filter Heating Cont. Info

SI B16 01 10
Fuel Supply Systems

January 2010
Technical Service

SUBJECT
M57Y FC: 4B1C Fuel Filter Heating, Control

MODEL
E70 and E90 with M57Y

SITUATION

During diagnosis, the fault code 4B1C (Fuel filter heating, control) is stored in the DDE.

CAUSE

This fault code is generated due to a software error in the diagnostics of the DDE.

Information

Do not replace any parts. This fault will not turn on the "Service Engine Soon" lamp. Continue with diagnosis of other faults if they are stored in the DDE. This error in the software will be corrected in a later version of ISTA.

WARRANTY INFORMATION
For information only