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Pierre, I have 22838 and 29012 with the P226D 00 (237) codes I never had a check engine light until the changed the coolant sensor Took it back and they said it was because of the EGR cooler and that didn’t fix it Have spent more than 5 K in a couple of months and maybe 1000 miles driven. I...

Yes it does and I understand that they are back ordered until December

So I had it tested and they are telling me that it flows in both directions and it shouldn’t I do have some soot in my DOC and they said I can now that out Now I guess I need to find a replacement DFP, any good places to purchase other than the dealer. There doesn’t seem to be one locally

The DPF isn’t that bad looking but I have sent it off to be tested. The SOC has some carbon in it. How many issues have peps had with them?

So I have had my Q7 at the dealer several times now and am only told to replace the DPF.....there was no issue until after i took it to the dealer for a small coolant leak and on the drive home the CEL came on....took it back and they said it was the EGR cooler so that was replaced and the light...

What coolant bypass valve are you talking? I had mine replaced and afterwards is when i got the light. s I told them I wanted them to fix what it needed that’s why they changed the seals. I don’t feel I should have to pay them for the same labor twice but they say beacon the miles (133k)...

they just did my coolant replacement and new gaskets and seals....now i have the same codes and they are telling me it is the EGR cooler for a cool 2100 repair in top of the 2200 i just did....say it is because of high mileage. Seems funny that my CEL came on on my drive home after picking it up.

Thanks for you reply. I will try them

i called and he doesnt want to do a coolant repair on a 2015 Q7 TDI