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Cummins ISL CM850 (2003-06) Fault Code: 351 PID: SID 254 SPN: 627 FMI: 12 Injector Power Supply – Bad Intelligent Device or Component. The ECM measured injector boost voltage is low.

Cummins ISL CM850 (2003-06) Fault Code: 351 PID: SID 254 SPN: 627 FMI: 12 Injector Power Supply – Bad Intelligent Device or Component. The ECM measured injector boost voltage is low.

This fault code will become active when the engine is running, the primary engine speed sensor signal is present, the battery charge is above a minimum threshold, and, at the same time, the measured injector power supply voltage is lower than the commanded injector power supply voltage.

This fault code will become inactive whenever the keyswitch is turned on.

This fault code will become inactive whenever the engine is running and measured injector power supply voltage reaches the commanded injector power supply voltage.

Possible repairs:

1) Repair or replace the damaged harness, pins, fuses, or connectors.
2)Repair or replace the ECM power supply harness, fuses, or fuse holders, or clean the battery terminal connections.
3)Replace the ECM.

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