The newest NOx senor part numbers are 21636091 for the pre-SCR (bottom of the DPF) and 22014032 for the post -SCR (SCR box outlet) . Working on a truck now that came in with SCR derated 5MPH. Active codes SPN-4094 FMI-18 and SPN-5394 FMI-17. Did all the DEF doser test and all good. replaced both NOX sensor with newest sensor, updated software in engine and SCR ECM's and did crystal sub regen and a regular regen, all OK. I do about 1 a week of these.
Good afternoon I got this code SPN-4094 FMI-18 and SPN-5394 FMI-17 please help me
After treatment catalyst
in Engine and Transmission
Posted
Good afternoon I got this code SPN-4094 FMI-18 and SPN-5394 FMI-17 please help me