1995 Powerstroke P0603 Engine Code Meaning? - Ford Powerstroke Diesel Forum
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Old 04-23-2008, 08:42 AM
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1995 Powerstroke P0603 Engine Code Meaning?

Would firstly like to say Hello to everyone here since Im new!

My Issue here is as followed..
i have a 1995 ford f-350 Powerstroke , auto tranny..the truck runs great!
Except for when the check engine light comes on..At this point it will start running as if its only running on Half the cylinders! Periodicly it will go away and run fine. then it comes back and so on.
i took it in today for a computer reading, and it was reading
P0603.
What dose this mean?
i was told it could be the injector harness clips?
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Old 04-23-2008, 03:39 PM
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i guess im the first to reply so ill tell you what the code means. The code is for the keep alive memory and all this means is that the computer has been reprogrammed some how either through the addition of a chip or that you've had the batteries disconnected for more than and hour which will cause the computer to relearn its strategies. As for the injectors shutting off thats something entirely different. This could be cause of the injector harness connections or any of the electrical wiring involved. Also your ICP (injection control pressure sensor) will cause this too...this sensor gives a reading back to the computer so that the IPR (injection pressure regulator) can control the amount of oil going to your injectors. what you might try is to disconnect the ICP while the truck is running and see if the engine runs any rougher. If it does im may very well be the ICP sensor itself...also while the engine is running try and disconnect the injector connectors one at a time. Monitor how the engine is running. It seems odd that the only code you have is the KAM code cause if it was one the other things i mentioned it would give you another code. On our trucks it takes a major malfunction to get the check engine light to come on. If you can the next time it throws that Check engine light scan it right then and there to see what is making the code pop. Keep us informed and we can go from there.
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