Cummins ISB CM850 (2003-06) Fault Code: 2382 PID: SPN: 2795 FMI: 4 Turbocharger position sensor circuit – shorted low. Low signal voltage detected at the turbocharger position sensor circuit. The turbocharger position sensor shares supply and return wires in the engine harness with other sensors. Opens and shorts in the engine harness can cause multiple fault codes to be active. Possible causes: 1)Signal circuit open or shorted to ground2)Supply circuit open or shorted to ground3)Sensor shorted to ground. Possible repairs: 1)Replace the turbocharger position sensor.2)Repair or replace the engine harness.3)Replace the ECM. Cummins ISB CM850 (2003-06) Fault Code: 2381 PID:...

Cummins ISB CM850 (2003-06) Fault Code: 2383 PID: SID 27 SPN: 641 FMI: 5 Variable Geometry Turbocharger actuator circuit – current below normal, or open circuit. The ECM monitors the voltage level of this circuit and logs a fault code if the voltage level indicates an open circuit or short to voltage source is present. This fault is always set inactive when the keyswitch is turned on. If the fault condition reoccurs while the keyswitch is in the ON position, the fault code will be set active. Since active faults are set inactive at key-on, this troubleshooting tree should be...

Cummins ISB CM850 (2003-06) Fault Code: 2384 (ISB) PID: SID 27 SPN: 641 FMI: 4 VGT actuator driver circuit – voltage below normal, or shorted to low source. A possible cause of this fault is the turbocharger actuator signal (+ or -) leads can be shorted to ground in the harness, motor, or the ECM. Do not supply voltage of any kind to the exhaust gas recirculation (EGR) valve motor. This circuit uses a pulse-width-modulated signal and direct voltage can permanently damage the motor. Possible repairs: 1)Replace the turbocharger.2)Repair or replace the engine harness.3)Replace the ECM.4)The removal and reinstallation of...

Cummins ISB CM850 (2003-06) Fault Code: 2384 (ISC) PID: SID 27 SPN: 641 FMI: 4 VGT Actuator – Voltage Below Normal or Shorted to Low Source. Low voltage detected at turbocharger control valve circuit. Turbocharger control valve command can be monitored with the INSITE? electronic service tool. This parameter represents the ECM command to the turbocharger control valve which in turn controls the variable geometry actuator position. Possible causes: 1)Signal short circuit to ground2)Short circuit to ground in the turbocharger control valve. Possible repairs: 1)Replace the turbocharger control valve.2)The removal and installation of the connector may correct the fault.3)Replace the...

Cummins ISB CM850 (2003-06) Fault Code: 2385 (ISB) PID: SID 27 SPN: 641 FMI: 3 VGT actuator driver circuit – voltage above normal or shorted to high source. A possible cause of this fault is the turbocharger actuator signal (+ or -) leads can be shorted to a voltage source in the harness or the ECM. Do not supply voltage of any kind to the EGR valve motor. This circuit uses a pulse-width-modulated signal and direct voltage can permanently damage the motor. Possible repairs: 1)Replace the engine harness.2)Replace the ECM.3The removal and installation of the connector may correct the fault....