RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
Fuel Pressure Sensor: All Technical Service Bulletins
Fuel System - MIL ON/Multiple Low Fuel Pressure DTCs
01 MIL on (DTC P310B, P129F, P008B, P129E, P008A, P2540, P0087)
24 10 02
2015106/7
January 29, 2010.
Supersedes Technical Service Bulletin Group 24 number 10-01 dated January 12, 2010 for reasons listed below.
Affected Vehicles
Condition
MIL on and one or more of the following DTCs are stored in the ECM data memory:
^ P310B (Low-pressure fuel system regulation, fuel pressure outside tolerance)
^ P129F or P008B (low-pressure fuel system, pressure too high)
^ P129E or P008A (low pressure fuel system, pressure too low)
^ P2540 (low pressure fuel system, pressure out of range)
^ P0087 (rail fuel pressure system, pressure too low)
Technical Background
Due to fuel intrusion into the low-pressure system fuel pressure sensor (G410), a false signal may be sent to the controller, resulting in a reading that is
out of tolerance.
Comparing Measure Value Block 103 with 106 is not an accurate method to diagnose low-side fuel pressure sensor G410.
In order to diagnose G410 accurately, use a mechanical gauge and compare results with the low-side fuel pressure Actual Value in Measured Value
Block 103.