Cumminz

Cummins ISB CM850 (2003-06) Fault Code: 2962 PID: 412 SPN: 412 FMI: 0 EGR Temperature – Data Valid But Above Normal Operating Range, Moderately Severe Level. Possible causes: 1)A fouled EGR cooler2)High coolant temperature3)Low coolant level4)Malfunctioning EGR valve5)Malfunctioning EGR valve position sensor6)High exhaust temperatures7)Improper coolant-and-water mix8)Variable geometry turbocharger stuck closed. Note: This fault code will probably not be active with no load on the engine in the shop. The engine must be loaded to trip this fault code and determine if the malfunction has been found and fixed. Possible repairs: 1)Repair or replace the leaking component.2)Drain and fill the cooling...

Cummins ISB CM850 (2003-06) Fault Code: 2963 PID: 110 SPN: 110 FMI: 15 Engine Coolant Temperature High – Data Valid but Above Normal Operational Range – Least Severe Level. Engine coolant temperature signal indicates coolant temperature is above the engine coolant temperature engine protection warning limit. This fault code indicates that coolant temperature has exceeded the engine protection limits for high coolant temperature. Possible repairs: 1)Replace the ECM.2)Replace the OEM harness.

Cummins ISB CM850 (2003-06) Fault Code: 2964 PID: 105 SPN: 105 FMI: 15 Intake Manifold Temperature High – Data Valid But Above Normal Operating Range – Least Severe Level. Intake manifold air temperature signal indicates intake manifold air temperature above engine protection warning limit. The intake manifold air temperature sensor measures the temperature of the charge-air as it passes through the intake manifold. Possible causes: 1)Plugged charge-air cooler fins2)Restricted airflow through the charge-air cooler3)Undersized charge-air cooler4)High turbocharger compressor outlet temperature. The sensor return configuration for Euro 4 ISB engines has been changed for automotive wiring harnesses manufactured from February 2012...

Cummins ISB CM850 (2003-06) Fault Code: 297 PID: 223 SPN: 1388 FMI: 3 Auxiliary Pressure Sensor Input 1 Circuit – Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the OEM pressure circuit. Possible causes: 1)Open return circuit in the harness, connectors, or sensor.2)signal circuit shorted to sensor supply or battery voltage. Possible repairs: 1)Replace the OEM pressure sensor.2)Replace the ECM.

Cummins ISB CM850 (2003-06) Fault Code: 2973 PID: 102 SPN: 102 FMI: 2 Intake Manifold Pressure Sensor Circuit – Data Erratic, Intermittent, or Incorrect. The electronic control module (ECM) has detected an intake manifold pressure signal that is too high or too low for present engine operating conditions. The intake manifold pressure sensor monitors pressure in the intake manifold. This fault is set active when the intake manifold pressure is too high or too low for the present engine operating conditions. The ECM compares the intake manifold pressure reading to turbocharger speed (estimated by the ECM in some engines) to...