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PACCAR PX-8 CM2150 (2007-09) Fault Code: 2387 PID: SID 027 SPN: 641 FMI: 7 VGT Actuator Driver Circuit (Motor) – Mechanical System Not Responding Properly or Out of Adjustment.
Verify the 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, calibrate the ECM.
1)This fault code is set when the actual VGT actuator position does not meet the commanded position for more than 10 seconds.
2)Large boost pressure leaks can also cause this fault code.
The aftertreatment system must be inspected after making the appropriate repair outlined in this fault code troubleshooting tree. Progressive damage to the aftertreatment system can possibly have occurred. Perform the aftertreatment initial check procedure to test for a damaged diesel particulate filter.
1)For ISB engines, reference the ISB CM2150 Service Manual, Bulletin 4021578. Refer to Procedure 014-013 in Section 14.
2)For ISC and ISL engines reference the ISC and ISL CM2150 Service Manual, Bulletin 4021569. Refer to Procedure 014-013 in Section 14.
Inspect the aftertreatment system for potential damage.
Inspect the turbocharger vanes for residue, and clean the vanes, if required. Find the source of the residue and repair.
Possible repairs:
1)Repair or replace the component causing the charge-air system leaks.
2)Inspect the grid heater for damage or plugging. If found damaged, replace the grid heater and inspect the air handling system for debris.
3) replace the EGR cooler.
4)Replace the variable geometry turbocharger actuator.
5)Replace the turbocharger assembly.
6)Replace the damaged aftertreatment system component(s).
7)If necessary, calibrate the ECM.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2377 PID: SID 033 SPN: 647 FMI: 3 Fan Control Circuit – Voltage Above Normal or Shorted to High Source. Open circuit or high voltage detected at the fan control circuit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2376 PID: 412 SPN: 412 FMI: 4 Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at EGR temperature circuit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2375 PID: 412 SPN: 412 FMI: 3 Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at EGR temperature circuit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2374 PID: 131 SPN: 1209 FMI: 4 Exhaust Gas Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the exhaust gas pressure circuit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2373 PID: 131 SPN: 1209 FMI: 3 Exhaust Gas Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the exhaust gas pressure circuit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2367 PID: SID 80 SPN: 1073 FMI: 3 Engine Brake Actuator Driver Output 2 Circuit – Voltage Above Normal or Shorted to High Source. Open circuit or high voltage detected at the engine brake solenoid number 2 signal circuit.