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Cummins ISX CM870 (2003-06) Fault Code: 2271 PID: P27 SPN: 27 FMI: 3/3 EGR Valve Position Sensor Circuit – Shorted High. High signal voltage detected at EGR valve position sensor circuit.
The EGR valve position sensor shares supply and return wires in the engine harness with other sensors. Opens and shorts in the engine harness may cause multiple fault codes to be active.
Possible causes:
1)Open return circuit in the harness, connectors, or sensor2)Signal circuit shorted to sensor supply or battery voltage3)Failed EGR valve position sensor4)Damaged ECM.
Possible repairs:
1)Replace the EGR valve assembly.2)Replace the engine control module.3)Repair or replace the EGR valve extension harness.4)Repair or replace the engine harness.
Cummins ISX CM870 (2003-06) Fault Code: 2215 PID: P094 SPN: 94 FMI: 1/18 Fuel Pump Delivery Pressure – Data Valid But Below Normal Operating Range – Moderately Severe Level. Low fuel pressure has been detected by the ECM.
Cummins ISX CM870 (2003-06) Fault Code: 1943 PID: SPN: 3555 FMI: 1/17 Ambient Air Density – Data Valid But Below Normal Operational Range – Least Severe Level. Engine torque has been reduced because the vehicle was operating at a high altitude condition.
Cummins ISX CM870 (2003-06) Fault Code: 1228 PID: P27 SPN: P27 FMI: 2/2 EGR valve position sensor circuit – data erratic, intermittent, or incorrect.
Cummins ISX CM870 (2003-06) Fault Code: 1119 PID: P110 SPN: 110 FMI: 0/16 Engine Coolant Temperature – Data Valid but Above Normal Operating Range – Moderately Severe Level. Engine coolant temperature signal indicates coolant temperature is above the engine coolant temperature engine protection warning limit.
Cummins ISX CM870 (2003-06) Fault Code: 951 PID: 951 SPN: 166 FMI: 2/2 A power imbalance between cylinders was detected by the electronic control module (ECM).
Cummins ISX CM870 (2003-06) Fault Code: 784 PID: SPN: 1590 FMI: 2 Adaptive Cruise Control Mode – Data Erratic, Intermittent, or Incorrect. Loss of communication with adaptive cruise control.