Hi everyone,
I've found answers to most of my questions on this forum over the years, but not this one!
I've just had the EGR valve replaced on my Mk. 6, (2002, 2.0 litre DI, 55kW) and done a thousand mile trip (so I'm now a thousand miles from the garage that did the work!) Four times, under different conditions, the warning light started flashing (the glow plug lamp). Twice, this was associated with a momentary drop in revs, the other 2 times I was idling in traffic jams and didn't notice anything out of the ordinary.
Apart from the drop in revs, which lasted a second or two max., it didn't appear to affect the power and I continued driving normally until it was safe to switch the engine off and on again, which stopped the light flashing. At all other times, the engine runs beautifully - no rough noises or uneven idling, generally a fantastic improvement in performance since the valve replacement.
The code readings are below, my main question is how much I need to worry about this. I'll be in the UK on holiday for another 5 weeks doing fairly short trips then I've got another thousand mile trip back across Europe, where I can get back to the mechanics who changed the valve. Is it likely to put the engine into limp home mode while I'm belting along an autobahn surrounded by maniac Polish lorry drivers, for example, or is it the computer registering that something's not totally right but nothing that requires immediate attention?
Thanks in advance
===PCM DTC P0404===
Code: P0404 - EGR valve position control performance or range fault
Module: Powertrain Control Module
Diagnostic Trouble Code details
EGR valve position control performance or range fault
This DTC may be caused by :
Open Circuit
Short circuit to ground or battery
Damaged or worn vacuum hose
EGR valve assembly
Blocked hoses / filter / valves
Faulty or damaged PCM.
===END PCM DTC P0404===