Is a P0603 code something to worry about?
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Elder User
Joined: Jul 2016
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From: Northwest Indiana
Is a P0603 code something to worry about?
This code showed up while cranking the other day, looked online and it looks like something that will show Ford that youve been messing with the PCM (running tunes). Ive got the DiabloSport 80HP tune right now.
Just double checking to make sure thats all it is.
Just double checking to make sure thats all it is.
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From: Oakdale, CA
When running some sort of aftermarket tune, a P0603 and/or P0605 code is pretty normal.
I would not worry about it unless you are having issues with the truck, which could result from a PCM problem.
I would not worry about it unless you are having issues with the truck, which could result from a PCM problem.
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From: Northwest Indiana
I dont see anything wrong with the truck, though when I start it up it runs kinda rough for a couple seconds, nothing horrible, maybe 900 RPMS, then levels out. But I think thats just cuz it is starting to get cold and I dont have winter blend yet.
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OK thank you, that is what I had seen online but I just wanted to make sure. Weird though, never had it popup until last weekend, Ive been running tunes since May.
I dont see anything wrong with the truck, though when I start it up it runs kinda rough for a couple seconds, nothing horrible, maybe 900 RPMS, then levels out. But I think thats just cuz it is starting to get cold and I dont have winter blend yet.
I dont see anything wrong with the truck, though when I start it up it runs kinda rough for a couple seconds, nothing horrible, maybe 900 RPMS, then levels out. But I think thats just cuz it is starting to get cold and I dont have winter blend yet.
You can see if it is related to the tuner by loading back to stock. After you have flashed back to stock, clear the codes and see if the code returns.
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Elder User
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From: Northwest Indiana
OK, it doesnt seem to be a problem as of now, probably just a weather thing. If it gets worse or keeps going after I switch to winter blend Ill put it back to stock and see how its going. Thanks again.
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