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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 144 PID: PID 110 SPN: 110 FMI: 3 Engine Coolant Temperature 1 Sensor Circuit- Voltage Above Normal or Shorted to High Source
Circuit DescriptionThe coolant temperature sensor is a variable resistor sensor and is used to measure the temperature of the coolant of the engine. The engine control module (ECM) supplies 5 volts to the coolant temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the coolant temperature.
Component LocationThe engine coolant temperature sensor is located on the thermostat housing.
Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.
Conditions for Setting the Fault CodesThe Engine Control Module (ECM) detected the coolant temperature signal voltage was greater than 4.95-VDC for more than 1 second.
Action Taken When the Fault Code is ActiveThe ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.A default value is used for the engine coolant temperature reading.Conditions for Clearing the Fault CodeTo validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.For On-Board Diagnostics (OBD) engines, the ECM will extinguish the Malfunction Indicator Lamp (MIL) after three consecutive trips where the diagnostic runs and passes.The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.
Shop TalkThe 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.
Before troubleshooting Fault Code 144, check for multiple fault codes.
Possible causes of this fault code include:
Open return circuit in the harness, connectors, or sensorOpen signal circuit or shorted to a voltage source.Malfunctioning engine coolant temperature sensor
Possible Cause:1) Engine coolant temperature sensor failure2) ECM failure3) Engine harness
Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 143 PID: PID 100 SPN: PID 100 FMI: 18 Engine Oil Rifle Pressure- Data Valid But Below Normal Operational Range- Moderately Severe Level
Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 141 PID: PID 0522 SPN: 100 FMI: 4 Engine Oil Rifle Pressure 1 Sensor Circuit- Voltage Below Normal or Shorted to Low Source
Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 135 PID: PID 100 SPN: 100 FMI: 3 Engine Oil Rifle Pressure 1 Sensor Circuit- Voltage Above Normal or Shorted to High Source
Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 134 PID: PID 372 SPN: 974 FMI: 4 Remote Accelerator Pedal or Lever Position Sensor 1 Circuit- Voltage Below Normal or Shorted to Low Source
Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 133 PID: PID 372 SPN: 974 FMI: 3 Remote Accelerator Pedal or Lever Position Sensor 1 Circuit- Voltage Above Normal or Shorted to High Source
Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 132 PID: PID 091 SPN: 91 FMI: 4 Accelerator Pedal or Lever Position Sensor 1 Circuit- Voltage Below Normal or Shorted to Low Source