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Grumpyb

451 Diesel Question

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Since there is no 451 diesel section, I will ask the question here. Does anyone know what the fault code P1408 means.My CDI has had a number of problems but its down to this one now that causes the engine to drop revs to 3000rpm after about a minute of running.I feel sure its related to the EGR system but it would help to have a bit more specific description.Grumpy-b

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Thanks for the link.I was astounded by the amount of gunge that was in the EGR system not just carbon but greasy deposits as well. I have already cleaned out the casting directing the gas into the inlet, and recently took out the main EGR valve. No mean feat.This was completely clogged and was blocked. This took away the error code of P1409. Upstream of this on the exhaust side is a round chamber attached to the turbo, not easy to get out but looking at the reasonable condition spare I have (Lower mileage but also a fair amount of internal deposit) mine is probably partially blocked. But this is a terror to get at. Turbo out again I think.It is a shame that Smart dont make the codes available, they stated that I would have to take the car to them and they charge £120 an hour just to get the code. Which aparently they cant give you but can only get while online. Seems a bit far fetched as the clones of Star give such data without being connected to MB.Grumpy-b

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