Cummins ISB CM850 (2003-06) Fault Code: 145 (Auto) PID: 110 SPN: 110 FMI: 4 Engine Coolant Temperature 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine coolant temperature circuit. The engine coolant temperature sensor shares return wires in the engine harness with other sensors. A shorted return can cause multiple fault codes to be active. Before troubleshooting Fault Code 145, check for multiple fault codes. Possible causes: 1)Signal shorted to ground in the harness.2)Signal shorted to return or ground in the sensor. On-Board Diagnostics (OBD) Information (Euro 4 Certified Engines): 1)The...

Cummins ISB CM850 (2003-06) Fault Code: 145 (Marine) PID: 110 SPN: 110 FMI: 4 Engine Coolant Temperature 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine coolant temperature circuit. The engine coolant temperature sensor shares return wires in the engine harness with other sensors. A shorted return can cause multiple fault codes to be active. Before troubleshooting Fault Code 145, check for multiple fault codes. Possible causes: 1)Signal shorted to ground in the harness.2)Signal shorted to return or ground in the sensor. Possible repairs: 1)Replace the engine coolant temperature sensor2)Replace the...

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...