cxn613 Posted November 26, 2010 Share Posted November 26, 2010 Our 2008 cxu mp 8 485 showed a code of mid 128, I forget the rest of the numbers. Looked it up in the book and ended up being #5 injector code. The motor was running rough, but still running. I erased the fault code using my steering column mounted switch. As soon as i did that, the lighting bolt went out and the motor smoothed out. Ran the truck the rest of the day with no problem. Right after I erased the code and started back down the interstate it started a regen right away. What could have been the cause of this fault code????? Thanks Quote Link to comment Share on other sites More sharing options...
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