Group,
My 04 had the CEL come on last week so I got a scanner to check the codes.
All of the cylinders have the same code reading 0261, 0264,0267 and so on (Injector Circuit Low). So I did a FICM voltage test;
With the key on; 49.2
Cycling key; 49.2
Cranking the engine; 45.1
With the engine running; 43.3
The truck still runs like it normally does, same throttle pickup, same fuel mileage, runs smooth.
The only thing that has change is when I first start it.
When I turn it over to start it either just catches and starts or doesn't the first crank, when I crank it again it starts right away like normal.
Just wondering if the FICM is going out or it is something else.
The truck has only 150k miles on it.


Thanks for the help,

 

I dont know alot, but it seems to be ur FICM voltage is LOW..(the 45 and 43 #)..... check the FICM test page....it gives appropriate voltage values.

 

You need to replace FICM asap or it will fry your injectors.