Cummins ISL CM850 (2003-06) Fault Code: 599 PID: SID 25 SPN: 640 FMI: 14 Auxiliary Commanded Dual Output Shutdown – Special Instructions. The engine protection limit has been exceeded for the dual outputs calibrated limits.

Cummins ISL CM850 (2003-06) Fault Code: 599 PID: SID 25 SPN: 640 FMI: 14 Auxiliary Commanded Dual Output Shutdown – Special Instructions. The engine protection limit has been exceeded for the dual outputs calibrated limits.

This fault code is activated when one of the OEM defined inputs has exceeded a calibratible limit. The triggers for shutdown are OEM dependent.

Possible repairs:

1)Replace the OEM harness.