Cummins ISC CM2150 (2007-09) Fault Code: 779 PID: SID 051 SPN: 703 FMI: 11 Auxiliary Equipment Sensor Input 3 - Root Cause Not Known

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM.

This fault code is activated when the pressure or temperature input from the OEM sensor exceeds the engine protection limit defined by the OEM. An engine power derate is possible, depending on the OEM application.

Possible repairs:

1)Replace the OEM harness.
2)If necessary, recalibrate the ECM.