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PACCAR PX-9 CM2350 (2013-17) Fault Code:1144 PID:SID5 SPN:655 FMI:7 Injector Solenoid Driver Cylinder 5 – Mechanical System Not Responding or Out of Adjustment

Injector Solenoid Driver Cylinder 5 – Mechanical System Not Responding or Out of Adjustment. The ECM has detected an error with the injection timing or quantity.

Possible reduced engine performance

Circuit Description:
The ECM uses diagnostic software to verify injector operation. During selected conditions, each injector is fired. The fueling quantity and timing are then compared to a specified threshold.

Component Location:
The engine harness connects the ECM to the pass-through connector(s) that are located in the rocker housing. Internal injector harnesses are located under the valve cover and connect the injectors to the engine harness at the pass-through connector(s).

Conditions for Running the Diagnostics:
This diagnostic runs periodically during engine operation.

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected a fueling timing or quantity error for the specified injector.

Action Taken When the Fault Code is Active:
The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.

Conditions for Clearing the Fault Code:
It is necessary to use the “Reset All Faults” command in INSITE™ electronic service tool to clear this fault and extinguish the amber CHECK ENGINE lamp and/or Malfunction Indicator Lamp (MIL).

Shop Talk:
This fault code is intended to identify fueling quantity and timing issues.

Possible Causes:
1) Inactive fault codes
2) Faulty fuel injector