Medium and Heavy Trucks
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Hi Mark, My name is***** will be glad to help. what fault codes do you have logged in the ECM? This is what is needed to determine what circuit the fault is in so we can then get into further troubleshooting.
have code for dpf service and now have a code dtc 3338 spn7179 fmi 17
3338 7129 17
AMS KOER STD - EBP unable to build during test
This means that Exhaust back pressure is unable to build to allow regen. How did you clean your DPF filter? Do you have any exhaust leaks?
Shops have very expensive equipment for servicing DPF filters and the process is done by baking them but any solvents and other trial attempts to clean them other ways usually results in the customer buying a new filter.
yes had it baked by a hd parts store that has a big machine to clean them and I have no exhaust leaks
Check your turbo operation and for loss of boost pressure as a faulty turbo can also throw this code along with a faulty sensor or harness throwing a false code if everything checks ok.
Hi, Did you still need help with this or did you get this resolved?