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Cummins ISM CM875 (2003-06) Fault Code: 155 PID: P105 SPN: 105 FMI: 0/0 Intake Manifold 1 Temperature – Data Valid But Above Normal Operating Range – Most Severe Level.
The intake manifold air temperature sensor measures the temperature of the charge air (fresh air compressed by the turbocharger, cooled by the charge air cooler, and mixed with EGR) as it passes through the intake manifold. This fault code is activated if the intake manifold air temperature is above 132?C [270?F].
NOTE: Prior to running the INSITE? electronic service tool EGR Valve and EGR Valve/Turbocharger Operational Test, the ECM Calibration Software Phase could possibly need to be updated to the latest Software Phase. The ECM Calibration Phase Software can be checked in INSITE? electronic service tool, under ‘Features and Parameters’. Expand the selection for ‘System ID and Dataplate’ and go to ‘Calibration Information’. If the Software Phase is earlier than shown below, recalibrate the ECM using the January 2006 INCAL? CD-ROM, or later. Engines with the Software Phase listed below or later do not require a recalibration.
ISX engines with CM870 (engines built after January 2004) require Software Phase 06050302.
ISX engines with CM870 (engines built before January 2004) require no changes at this time.
This is a warrantable calibration change.
Possible causes:
1)Plugged charge air cooler fins2)Restricted airflow through the charge air cooler3)Failed EGR differential pressure sensor, or leaks in sensor tubes4)Undersized charge air cooler5)High turbocharger compressor outlet temperature6)Fouled EGR cooler7)Stuck EGR valve.
Possible repair:
1)Replace the charge air cooler with the correct size unit.2)Clean or replace the EGR differential pressure sensor adapter.3)epair or replace the intake manifold air temperature sensor.4)Replace the EGR Cooler.
Cummins ISM CM875 (2003-06) Fault Code: 154 PID: P105 SPN: 105 FMI: 4/4 Intake Manifold 1 Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at intake manifold air temperature circuit.
Cummins ISM CM875 (2003-06) Fault Code: 153 PID: P105 SPN: 105 FMI: 3/3 Intake Manifold 1 Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at intake manifold air temperature circuit.
Cummins ISM CM875 (2003-06) Fault Code: 151 PID: P110 SPN: 110 FMI: 0/0 Engine Coolant Temperature – Data Valid But Above Normal Operating Range – Most Severe Level. Engine coolant temperature signal indicates engine coolant temperature above engine protection critical limit.
Cummins ISM CM875 (2003-06) Fault Code: 145 PID: P110 SPN: 110 FMI: 4/4 Engine Coolant Temperature 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine coolant temperature circuit.
Cummins ISM CM875 (2003-06) Fault Code: 144 PID: P110 SPN: 110 FMI: 3/3 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.
Cummins ISM CM875 (2003-06) Fault Code: 143 PID: P100 SPN: 100 FMI: 1/18 Engine Oil Rifle Pressure – Data Valid But Below Normal Operating Range – Moderately Severe Level. Engine oil pressure signal indicates engine oil pressure is below the engine protection warning limit.