All was going well with my Audi A6 2008 2.7tdi Manual Estate until it stopped suddenly back in April. Diagnostics showed "Crankshaft Position Sensor Fault", however changing this did not get my car started, and two garages including an independent Audi specialist gave up on the car. The fault was finally traced to a damaged tooth on the flywheel caused by a piece of metal coming away from the clutch plate. One new dual mass flywheel and clutch later the car was up and running again, however.......

The glow plug light started flashing, and the car went into limp mode as soon as I went over 2,500 - 3,000 revs or so. The diagnostic report shows "004195 - Fuel Pressure Regulation P1063 - 001 - Control Range Not Reached - Intermittent". See log:

004195 - Fuel Pressure Regulation
P1063 - 001 - Control Range Not Reached - Intermittent
Freeze Frame:
Fault Status: 00110001
Fault Priority: 0
Fault Frequency: 8
Reset counter: 255
Mileage: 121992 km
Time Indication: 0
Date: 2007.10.25
Time: 09:47:04

Freeze Frame:
RPM: 3717 /min
Torque: 374.4 Nm
(no units): 5.0
Voltage: 13.53 V
Pressure: 1178.6 bar
Duty Cycle: 53.3 %

No other faults are present, and turning ignition off and on clears the fault until next time 2500 - 3000 revs.

I have changed the fuel filter, changed the valve on top of the fuel filter, tried a new air mass meter, removed the injectors and had them all tested by a reliable person, checked for any leaks in the fuel lines etc., changed the brake pedal switch (and clutch pedal).

When the previous garages were trying to resolve the crankshaft position fault, they tried fitting a new high pressure pump (then removed when it made no difference), and removed the ECU and had that tested. Somewhere in all of this I think one of them has caused this problem as it was not there before. As the car still runs, I have tried replacing the various parts mentioned over the last 6 months, but I would like my full power back....................Any ideas?