granitero Posted April 2, 2014 Share Posted April 2, 2014 09 mack gu series roll off truck with mp8 codes Mid-128Ppid-326Fmi-11No clue whats going on any help would be greatly appreciated Quote Link to comment Share on other sites More sharing options...
turckster Posted April 5, 2014 Share Posted April 5, 2014 The Fault is for soot level, the FMI:11 is critically high soot load/level. The conditions for the fault is high soot levels in the DPF. Possible causes: Aftertreatment injector is clogged and /or DPF clogged. If you don't have the Tech Tool program and its at level 4 warning you will have to take it to a dealer. More than likely the 7th injector (aftertreatment injector) is clogged or has a poor spray pattern and the catylist is face plugged. The 7th injector will have to be cleaned, the DPF assly disassembled, the catylist cleaned and hopefully the DPF filter is ok. Assembled back together, the injector adaptive factor reset and a manual regen performed. Quote Link to comment Share on other sites More sharing options...
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