When the fuel pump driver module is faulty, you may observe that your vehicle’s engine is consuming more fuel than usual. If you have a bad FICM but your engine starts, you may notice that the engine doesn’t run smoothly. Sometimes, the engine will start after a few attempts and run rough throughout the drive. When this happens, your FICM power supply is faulty and doesn’t supply the needed power.

Poorly maintained oil and poor fuel quality (Low lubricity or unclean) can permanently damage multiple injectors within a short time period. Therefore, the total cost of diagnosis and fixing the U0105 fault code will depend on the hourly rate charged by the auto repair shop and the estimated repair time required to fix the issue. U0105 Fault Code: Lost Communication With Tcm We will advise you to do monthly fuel filter cleaning or a fuel filter replacement after damage prevents the debris from entering the fuel tank. Change Oil FrequentlyThis problem happens because the fuel pump delivers excessive fuel into the engine due to a malfunctioning fuel pump driver module. Consequently, you will have to refill your fuel tank more frequently.

FICM wiring harness problem: Inspect the harness for signs of wear and tear. If it appears damaged, replace it. Also known as the shell, this is the outer surface of the fuel injector. Inside the fuel injector, all other parts of the injector are arranged like a garden shower. The injector’s inner surface is designed to have a capillary or passageway through which high-pressure fuel from the fuel pump can flow for further spray. #2 Plunger When the current increases, it’s likely to damage the FICM’s circuitry. With a damaged FICM power supply, there will be insufficient power to start or run your engine. How Do You Know If You Have a Bad FICM?years of Bosch Motronic: Think tank under the bonnet". www.bosch.com. Archived from the original on 23 June 2006. A bad FICM won’t provide adequate power in the injectors to control fuel injection. As a result, there will be no fuel to burn and power the engine. Another sign of a bad FICM on a Duramax is when the fuel injector keeps misfiring. When this happens, the engine can sputter and cause excessive vibration in your vehicle. The injector misfires when starting the engine or running it.