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Cummins ISB CM850 (2003-06) Fault Code: 146 (Auto) PID: 110 SPN: 110 FMI: 0 Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Moderately Severe Level. Engine coolant temperature signal indicates engine coolant temperature is above engine protection warning limit. This fault code indicates that coolant temperature has exceeded the engine protection limits for high coolant temperature. Refer to Engine Coolant Temperature Above Normal symptom troubleshooting tree. Possible repairs: 1)Refer to the Engine Coolant Temperature Above Normal symptom tree in Troubleshooting and Repair Manual, ISC, QSC8.3, ISL and QSL9 Engines, Bulletin 4021418 or ISB (Common Rail Fuel...

Cummins ISB CM850 (2003-06) Fault Code: 146 (Marine) PID: 100 SPN: 110 FMI: 0 Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Moderately Severe Level. Engine coolant temperature signal indicates engine coolant temperature is above engine protection warning limit. This fault code indicates that coolant temperature has exceeded the engine protection limits for high coolant temperature. Refer to Engine Coolant Temperature Above Normal symptom troubleshooting tree. Possible repairs: 1)This fault code indicates that coolant temperature has exceeded the engine protection limits for high coolant temperature. Refer to Engine Coolant Temperature Above Normal symptom troubleshooting tree. Possible...

Cummins ISB CM850 (2003-06) Fault Code: 147 PID: 91 SPN: FMI: 1 Accelerator Pedal or Lever Position 1 Sensor Circuit Frequency – Data Valid but Below Normal Operational Range – Most Severe Level. A frequency of less than 100 HZ has been detected at the frequency throttle input to the ECM. The frequency throttle can be used in conjunction with a voltage throttle or by itself. Possible causes: 1)Open circuit in the frequency throttle signal wire.2)Shorted to ground frequency throttle signal wire.3)Failed frequency throttle.4)Incorrect frequency throttle reference (input) voltage. Possible repairs: 1)Repair or replace the frequency throttle.2)Repair or replace the...

Cummins ISB CM850 (2003-06) Fault Code: 148 PID: 91 SPN: FMI: 0 Accelerator Pedal or Lever Position Sensor 1 – Data Valid but Above Normal Operational Range – Most Severe Level. A frequency of more than 1500 Hz has been detected at the frequency throttle input to the ECM. The frequency throttle can be used in conjunction with a voltage throttle or by itself. Possible causes: 1)Malfunctioning OEM Frequency Throttle2)Shorted signal wire to voltage source. Possible repairs: 1)Repair or replace the frequency throttle.2)Replace the OEM harness.

Cummins ISB CM850 (2003-06) Fault Code: 151 (Auto) PID: 110 SPN: 110 FMI: 0 Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Most Severe Level. Engine coolant temperature signal indicates engine coolant temperature above engine protection critical limit. This fault code indicates that coolant temperature has exceeded the engine protection limits for high coolant temperature. Possible repairs: 1)Refer to the Engine Coolant Temperature Above Normal symptom troubleshooting tree in Troubleshooting and Repair Manual, ISB (Common Rail Fuel System) Series Engine, Bulletin 4021272 .