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PACCAR PX-6 CM2150 (2007-09) Fault Code: 1896 PID: SID 146 SPN: 2791 FMI: 13 EGR Valve Controller – Out of Calibration. The EGR valve has failed the automatic calibration procedure at initial key-on.
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.
When the keyswitch is initially turned on and at various times during engine operation, the closed position of the EGR valve is checked. This diagnostic checks to make sure the EGR valve is not stuck open.
This fault code is logged when the following error conditions exist:
1)The EGR valve motor measures the position of the EGR valve at initial key-on. If the valve is detected to be out of the normal position, this fault code will be logged.
2)The EGR valve will close when the fault code is active.
3)The fault code will remain active until the next key cycle.
The fault code will only go inactive if the initial key-on EGR position check passes.
The aftertreatment system must be inspected after making the appropriate repair outlined in this fault code troubleshooting tree. Progressive damage to the aftertreatment system may have occurred. Perform the Snap-Acceleration Test to check for a malfunctioning diesel particulate filter.
Possible repairs:
1)Replace the EGR valve assembly.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 1883 PID: SID 324 SPN: 3251 FMI: 2 Aftertreatment Diesel Particulate Filter Differential Pressure Sensor – Data Erratic, Intermittent, or Incorrect. The aftertreatment diesel particulate filter differential pressure sensor is reading an erratic value at initial key-ON or during engine operation.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 1881 PID: SID 324 SPN: 3251 FMI: 4 Aftertreatment Particulate Filter Differential Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage or open circuit detected at the aftertreatment differential pressure sensor circuit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 1879 PID: SID 324 SPN: 3251 FMI: 3 Aftertreatment Particulate Filter Differential Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the aftertreatment differential pressure sensor circuit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 1878 PID: SPN: 3245 FMI: 2 Aftertreatment Exhaust Gas Temperature 3 – Data Erratic, Intermittent, or Incorrect. The aftertreatment diesel particulate filter outlet temperature sensor is not changing with engine operating conditions.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 1877 PID: SPN: 3245 FMI: 4 Aftertreatment Exhaust Gas Temperature 3 Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the aftertreatment diesel particulate filter outlet temperature sensor circuit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 1876 PID: SPN: 3245 FMI: 3 Aftertreatment Exhaust Gas Temperature 3 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage or open circuit detected at the aftertreatment diesel particulate filter outlet temperature sensor circuit.