I Have a DTC Code 01-P0603 - Ford Powerstroke Diesel Forum
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post #1 of 14 Old 09-25-2007, 08:55 PM Thread Starter
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I Have a DTC Code 01-P0603

Greetings - new to forum

The Internet indicates this stands for Internal Control Module Keep Alive memory (KAM) Error. What I don't know is what the problem actully is, what the remedy is and estimated cost to fix.

Problem started with gas guage going to zero (with 3/4 quarters of a tank) and outside temp readout indicating 57 degrees. I live in Houston, and it is not 57.

Any ideas what the problem is? All assistance most appreciated.
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post #2 of 14 Old 09-25-2007, 08:57 PM
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to the ORG!! No clue but I will keep ya bumped until ya get an answer.

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post #3 of 14 Old 09-26-2007, 03:20 AM
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P0603 usually means you reprogrammed or tuned your truck thats the code that comes up when that is done normally. It usually means you changed the PCM programming

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post #4 of 14 Old 09-26-2007, 04:05 AM
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i agree , p0603 doesnt mean you have a problem, if you are runing any kind of chip, programmer ,etc. you will get that code , if you change programs or anything like that, your gas gauge problem, is probably the sending unit in the tank, need to get a gauge test run , to make sure gauge is operating properly , if it is ok. then probably sending unit, as ar as temp concern, the display itself could be going out , with the correct scanner , that problem can be diagnosed also, the temp sender for that is located right behind the grill , if its been damaged or soemone has drilled the radiator support ut to get more air it may have gotten damaged


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post #5 of 14 Old 09-26-2007, 05:34 AM Thread Starter
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Thanks for the replies guys -

Yes have been running a tuner for a couple of years with no problem until now. I just run it on Safe Tow, never the performance settings for fear of tearing something up. What a difference even the Safe Tow makes! I always reset it to stock B/4 taking to dealer for any service just in case they do any updating of computer while being serviced. Again, never a problem until now. Truck is completly stock except for tuner and K&N - just wanted reliability while on thr road pulling trailer. A little bummed out at the moment. All I can see is $$$$$$$ to the dealer.

Once it is fixed, will it be OK to again reprogram using Tuner - or am I asking for trouble?

Thx for letting me run on and again thanks for your replies.
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post #6 of 14 Old 09-26-2007, 07:41 AM
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Do you have gauges (egt,trannt,boost)? I highly recommend having gauges with any level of tuning, heck I wouldn't run a stock truck towing without gauges. 603 is not a problems, just a way for Ford to tell if you have been messing with it. If you want reliability, dump the K&N filter and spend around $38 on an open element filter like the Baldwin PA2818, a dusted engine can cost around $10,000. Tuners are pretty safe and I think make a truck last longer and run better if not abused.


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post #7 of 14 Old 09-29-2007, 03:15 PM Thread Starter
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AlabamaFrog - Thanks for your reply. Looked at your recommendation of a Baldwin PA2818 air filter. Baldwin's site indicates that their flat filter PA4148 is the one to use for an '03 7.3L. I sure like the looks of the PA2818 --- but wonder whether it will work in my stock enclosure or is an aftermarket enclosure required?

Many thanks - and by the way my original posted problem was the sending unit in the tank, which was replaced under warranty - dodged a bullet there - as the cost was extreme.
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post #8 of 14 Old 09-29-2007, 03:20 PM
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Here is a writeup for that filter. Explains the whole procedurehttp://www.powerstroke.org/forum/7-3...iy-intake.html

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post #9 of 14 Old 09-29-2007, 06:03 PM
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The whole purpose of going to the PA2818 is to get rid of the entire factory air box, they are prone to leak dust under high boost conditions and the factory system is just not up to the demand. Thrash it and put the open element filter in its place. We have installed them on several trucks from early 99 to 03. All you will need is something 4" round and about 4-6" long for an adapter. I use PVC but some use muffler pipe or even grocery store cans.


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post #10 of 14 Old 10-26-2007, 04:57 PM
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dtc code

KAM (keep alive memory) !!! i had the same code on my 2000 excusrion. i asked my buddy who works at a ford dealer as a mech and he told me to check for corrosion on the battery terminals, if they r good the check each batt individually to see if they still have good cells !! i cleaned my terminals and i havent had that code come up yet !! if that still doesnt work my biddy said to start pin testing the computer ????!!!?? luckily i didnt have to go that far !! let me know if that works for you !!!
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