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Cummins ISL CM850 (2003-06) Fault Code: 2963 PID: 110 SPN: 110 FMI: 15 Engine Coolant Temperature High – Data Valid but Above Normal Operational Range – Least Severe Level. Engine coolant temperature signal indicates coolant temperature is above the engine coolant temperature engine protection warning limit.

Cummins ISL CM850 (2003-06) Fault Code: 2963 PID: 110 SPN: 110 FMI: 15 Engine Coolant Temperature High – Data Valid but Above Normal Operational Range – Least Severe Level. Engine coolant temperature signal indicates coolant temperature is above the engine coolant temperature engine protection warning limit.

This fault code indicates that coolant temperature has exceeded the engine protection limits for high coolant temperature.

Possible repairs:

1)Replace the ECM.
2)Replace the OEM harness.