Cummins ISX CM870 (2003-06) Fault Codes: 111 PID: SID 254 SPN: 629 FMI: 12 Engine Control Module Critical Internal Failure – Bad Intelligent Device or Component. Error internal to the engine control module (ECM) related to memory hardware malfunctions or internal ECM voltage supply circuits.
This fault code can only be caused by an internal ECM problem.
Repairs are not possible for the ECM.
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