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PACCAR PX-8 CM2150 (2007-09) Fault Code: 2274 PID: 411 SPN: 411 FMI: 4 Exhaust Gas Recirculation Valve Delta Pressure Sensor Circuit – Voltage Below Normal or horted to Low Source.
Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM.
Possible causes:
1)A signal circuit open or shorted to ground in the engine harness or sensor
2)A supply wire open or shorted to ground
3)A malfunctioning EGR differential pressure sensor.
Possible repairs:
1)Replace the ECM.
2)Replace the EGR valve delta pressure sensor.
3)Replace the engine harness. Refer to Procedure 019-043 (Engine Wiring Harness) in Section 19.
4)Repair the OEM harnessVerify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM.
Possible causes:
1)A signal circuit open or shorted to ground in the engine harness or sensor
2)A supply wire open or shorted to ground
3)A malfunctioning EGR differential pressure sensor.
Possible repairs:
1)Replace the ECM.
2)Replace the EGR valve delta pressure sensor.
3)Replace the engine harness. Refer to Procedure 019-043 (Engine Wiring Harness) in Section 19.
4)Repair the OEM harness
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2273 PID: 411 SPN: 411 FMI: 3 Exhaust Gas Recirculation Valve Delta Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the EGR differential pressure sensor circuit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2272 PID: 27 SPN: 27 FMI: 4 EGR Valve Position Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage has been detected at the EGR valve position sensor circuit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2266 PID: SID 126 SPN: 1075 FMI: 4 Electric Lift Pump for Engine Fuel Supply Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the fuel lift pump circuit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2265 PID: SID 126 SPN: 1075 FMI: 3 Electric Lift Pump for Engine Fuel Supply Circuit – Voltage Above Normal or Shorted to High Source. High voltage or open detected at the fuel lift pump signal circuit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2198 PID: SID 027 SPN: 641 FMI: 11 VGT Actuator Driver Circuit – Root Cause Not Known. Intermittent communication between the smart VGT controller and the ECM has been detected. The VGT controller is not interpreting the J1939 message from the ECM correctly.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2195 PID: SID 51 SPN: 703 FMI: 14 Auxiliary Equipment Sensor Input 3 Engine Protection Critical – Special Instructions. The emergency door of the vehicle has been detected open.