CAT 3406E (Prefix 5DS or 1LW) Fault Code: 72 PID: 1 SPN: FMI: 11 Cylinder #1 Injector current fault
The Engine Control Module (ECM) detects one of the following items after attempting to operate the injector:
•A low current condition (open circuit) exists in the wiring for the cylinder injector solenoid. •A high current condition (short circuit) exists in the injector solenoid.
Probable Causes:
1) ECM Connection/Harness 2) Cylinder injector failure 3) Injector solenoid failure 4) Harness from ECM to valve cover connector 5) ECM failure 6) Injector harness under valve cover