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Cummins ISB CM850 (2003-06) Fault Code: 143 (Marine) PID: 100 SPN: 100 FMI: 1 Engine Oil Rifle Pressure – Data Valid but Below Normal Operational Range – Moderately Severe Level. Engine oil pressure signal indicates engine oil pressure is below the engine protection warning limit. The engine oil pressure sensor is located on the left side of the engine block. Possible repairs: 1)Refer to the Lubricating Oil Pressure Below or Above Normal troubleshooting tree in Troubleshooting and Repair Manual, ISBe and ISB (Common Rail Fuel System) Series Engines, Bulletin 4021271.

Cummins ISB CM850 (2003-06) Fault Code: 144 (Auto) PID: 110 SPN: 110 FMI: 3 Engine Coolant Temperature 1 Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage or open circuit detected at engine coolant temperature circuit. Before troubleshooting Fault Code 144, check for multiple faults. The engine coolant temperature sensor shares return wires in the engine harness with other sensors. An open return can cause multiple fault codes to be active. Possible causes: 1)Open return circuit in the harness, connectors, or sensor.2)Open signal circuit or shorted to a voltage source. On-Board Diagnostics (OBD) Information (Euro...

Cummins ISB CM850 (2003-06) Fault Code: 144 (Marine) PID: 110 SPN: 110 FMI: 3 Engine Coolant Temperature 1 Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage or open circuit detected at engine coolant temperature circuit. Before troubleshooting Fault Code 144, check for multiple faults. The engine coolant temperature sensor shares return wires in the engine harness with other sensors. An open return can cause multiple fault codes to be active. Possible causes: 1)Open return circuit in the harness, connectors, or sensor.2)Open signal circuit or shorted to a voltage source. Possible repairs: 1)Replace the engine...

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...