P0603 Code with additional issues?
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Cross-Country
Joined: Jun 2007
Posts: 96
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From: Just outside Chicago, IL
P0603 Code with additional issues?
I understand the usual cause for the infamous P0603 code is due to having a tuner in use and they trip this "Keep Alive Memory" (KAM) code.
I have a tuner on my truck and have enjoyed it for weeks now. I have seen this code come and go along with the usual P1000 and P1211 codes. I have seen all of them disappear as well -- which is good.
I keep my programmer/display connected to the ALDL port full time and I use the PID display to show my boost, EOT, EGT's etc. What I noticed recently is that the display goes blank (turns off) while I'm driving and sometimes resets/reboots and the truck seems to run just fine. The other day I was driving around and it just went blank. Until I unplugged it from the ALDL port and re plugged it back in it would have been off. Probably until the next key starting, I imagine.
I am wondering if my PCM really has a bad KAM battery and maybe I need to address it by replacing it -- board level or the whole PCM?
Has anyone experienced this?
I have a tuner on my truck and have enjoyed it for weeks now. I have seen this code come and go along with the usual P1000 and P1211 codes. I have seen all of them disappear as well -- which is good.
I keep my programmer/display connected to the ALDL port full time and I use the PID display to show my boost, EOT, EGT's etc. What I noticed recently is that the display goes blank (turns off) while I'm driving and sometimes resets/reboots and the truck seems to run just fine. The other day I was driving around and it just went blank. Until I unplugged it from the ALDL port and re plugged it back in it would have been off. Probably until the next key starting, I imagine.
I am wondering if my PCM really has a bad KAM battery and maybe I need to address it by replacing it -- board level or the whole PCM?
Has anyone experienced this?
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Joined: Jun 2005
Posts: 244
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From: tx
keep info coming
i have had similar situations but now display blackout i don't keep my tuner plugged in all time now since i installed gauges but the codes have come and gone i am fighting the mpg bug you hear all kinds of bs on mpg on this forum i get 8-9 pulling 11k toybox 13-14 city and 14-15 highway set on 80 hp setting with a edge tuner swith 4"inch ex stock tires
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Cross-Country
Joined: Jun 2007
Posts: 96
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From: Just outside Chicago, IL
EDGE goes back...
Well, it's now the 29th of January and I made arrangements to send my Edge unit back to PMT Diesel for a credit. I laid the ground work so that PMT wouldn't be stuck with the unit (they graciously offered to take it back, even after 4 months of my woes) so they are definitely a good company to do business with IMHO.
Edge just couldn't respond to my issues.
The latest was a wierd 3-4...4-3...3-4 shifting issue at WOT. It didn't do this as long as I wasn't in the pedal at full WOT. It didn't do this when I had the stock program working for me either.
I have some experience tuning for electronic 4 speed transmissions and to me, clearly, this was a tuning issue. I am considering the SCT Livewire tuner for it's greater tuning capabilities and the fact that I can get some Diesel guru's to offer me custom programs for my combo.
Edge just couldn't respond to my issues.
The latest was a wierd 3-4...4-3...3-4 shifting issue at WOT. It didn't do this as long as I wasn't in the pedal at full WOT. It didn't do this when I had the stock program working for me either.
I have some experience tuning for electronic 4 speed transmissions and to me, clearly, this was a tuning issue. I am considering the SCT Livewire tuner for it's greater tuning capabilities and the fact that I can get some Diesel guru's to offer me custom programs for my combo.
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Cross-Country
Joined: Jun 2007
Posts: 96
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From: Just outside Chicago, IL
Originally Posted by toolboxjunky
are you getting a speed sensor code from trans and if you are it is slipping between 3-4 gears. get ready for a trans job build it right from the start all out!
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