Cummins ISB CM850 (2003-06) Fault Code: 295 PID: 108 SPN: 108 FMI: 2 Barometric Pressure ?Data Erratic, Intermittent, or Incorrect. The barometric air pressure sensor is reading an erratic value at initial key-on. The engine barometric pressure reading is compared to the other pressure sensor values at initial key-on. If the value of engine barometric pressure does not match the readings from pressure sensors within a pre-defined tolerance, this fault code is logged. To make the diagnostic run, turn the keyswitch on for 15 seconds before cranking the engine. Possible causes: 1)Stuck in-range barometric pressure sensor reading2)High resistance in the...

Cummins ISB CM850 (2003-06) Fault Code: 296 PID: 223 SPN: 1388 FMI: 14 Auxiliary Pressure Sensor Input 1 – Special Instructions This fault code is activated when the pressure input from the OEM sensor exceeds the engine protection limit defined by the OEM. An engine power derate is possible depending on the OEM application. Possible repairs: 1)The engine protection limit has been exceeded for the OEM supplied pressure input. Cummins ISB CM850 (2003-06) Fault Code: 295 PID: 108 SPN: 108 FMI: 2 Barometric Pressure ?Data Erratic, Intermittent, or Incorrect. The barometric air pressure sensor is reading an erratic value at...

Cummins ISB CM850 (2003-06) Fault Code: 2961 PID: 412 SPN: 412 FMI: 15 Exhaust Gas Recirculation (EGR) temperature – Data Valid but Above Normal Operating Range, Least 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)Coolant-and-water mix8)Stuck closed variable geometry turbocharger. 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 refill...

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: 2962 PID: 412 SPN: 412 FMI: 0 EGR Temperature – Data Valid But Above Normal Operating Range, Moderately Severe Level. Cummins ISB CM850...