p0513 random failure

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Colbyashi

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Alright everyone I hope this is in the correct discussion, but I've got 2007 ram 3500 5.9 with the P0513 skim failure code. I want to start off by saying ive owned this truck for over 6 years and has been tuned with EFI Live for around 5 years(if that was to be asked). 6 months ago is when I started having issues, I drive to autozone for some stuff get out and lock my truck like normal, when i come back out 5-10 minutes later my truck will not unlock no matter how many times i tried. i manually unlock the truck and start it, does the typical shutoff after a few seconds. I go back in buy a new key fob battery seeing if that was the problem and that didnt help. I call a mobile lock smith and he reprograms my two keys(i use the same key for 6 years slap a new key in my untouched spare and that didnt work either). my truck lost the key program and he fixed that. Everything has been working just fine for the last 6 months until this week. Same bs happens again leaving work but this time after a few minutes i got it to unlock and start, i park it at home and for a week it will not lock/unlock or start. I try disconnecting the batteries and let the power drain for a few hours with no luck, a few days later I check fuses and they seem good(didnt test any power to them) I notice the battery cable to the fuse panel is corrode and i clean it up. magic the truck unlock/locks and starts for a few days so i think it was maybe it. few days go by and it fails to work. Now its been almost 2 weeks and its been an on off problem where sporadically decides work and but mostly not. i know this is a bit of a read but im lost, every thread ive read has stated the battery in the fob has nothing to do with the chip in the key, BUT for me if my truck doesnt unlock via the fob unlocking the anti theft it will NOT start it will shut off after a few seconds. Could my keys just be failing, Could my WCM that reads the chip be failing, bad grounds, what else could i look into? Any help would be awesome and I appreciate any insight on my problem! Thanks for reading the long painful read.
 

Barr2255

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things that come to mind… corrupt file in the PCM. Had it happen randomly in my brother in laws F-150. New PCM fixed it.

that’s just food for thought though. I
Think your on the right track, check grounds clean up all connections.

Maybe bad wire in harness, the area where you cleaned up the corrosion… next time it does the no start issue wiggle that area of the connections/wires if it starts up you have isolated that area as the issue. I only say that because you cleaned up that area and it worked. Maybe bumped the wire just right that’s having the issues.

Just thinking out loud, there’s lots of very knowledgable people on these forums hopefully they chime in.

Look at the stupid simple stuff first is my experience.
 

GTyankee

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Do you have a Transponder Key or a FOB

transponder key has no buttons
1728280405048.png
 

GTyankee

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This site usually has a darn good symptoms, causes, & possible fixes


Symptoms of a P0513 code may include:
Engine no start condition
Flashing security light in instrument panel
Engine may start after delayed reset period
Service engine lamp illumination

Possible causes for this code include:
Defective microprocessor key or key fob
Faulty ignition cylinder
Bad PCM or a PCM programming error

Read the rest, i don't wish to put the next section, because it is quite large

Read more at: https://www.obd-codes.com/p0513
Copyright OBD-Codes.com
 
OP
OP
C

Colbyashi

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This site usually has a darn good symptoms, causes, & possible fixes


Symptoms of a P0513 code may include:
Engine no start condition
Flashing security light in instrument panel
Engine may start after delayed reset period
Service engine lamp illumination

Possible causes for this code include:
Defective microprocessor key or key fob
Faulty ignition cylinder
Bad PCM or a PCM programming error

Read the rest, i don't wish to put the next section, because it is quite large

Read more at: https://www.obd-codes.com/p0513
Copyright OBD-Codes.com
so i read that article on P0513 you attached and there are a few things ill check first making sure my wiring is clean, tight no frays. in areas on the fuse panel and pcm and battery terminals. how common could it be the pcm actually has corrupted a file? I havent touched the computer with anything other EFI live about 5 years ago, and if it was the case is a used pcm an option? could one be programmed, i see on most oem mopar parts stores they are all discontinued or cost about 1300 bucks. To touch on the ignition cylinder would it likely be that or the WCM fails to read the chip in the key?
 
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