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Gfunk · 03-30-2019, 08:07 PM

Hey I know this is an old thread and I dont post in here often but I am having the same problem with my car not shutting off when I turn the key off. Only happens after at least a 30 min drive.

Throwing codes U0122 lost control with vehical dynamic control, P0463 fuel level sensor A high, and P0420 for my absence of my pre cat but that has been on and off intermittently for 3 years since I put the borla header on.

I kill the car by stalling it out since it's a manual. Once I turn it on again it will turn off perfectly fine and no codes. After a 30 min or more drive and I try to shut it off same problem traction control light comes on and it starts throwing codes.

I thought at first the alternator was backfeeding. Replaced the alternator and still having issues. Next I was planning on checking the ignition switch.

I also do have a sync up and drive device from t mobile plugged into my obd2 port. It monitors your car if there is a break in, has a GPS tracker and shows you engine codes. Next step also is unplug it and go for a drive and see if I still have the issue.

Here is a list of all mods to the car.

2013 frs
Rsenthalpy tune
Borla Uel header
Cat back
Coilovers, rear upper control arms and rear toe arms
After market radio with small sub and amp

Any advice is appreciated I will keep you guys posted if I figure anything out. Thank you.

03-30-2019, 08:07 PM	#26
Gfunk Junior Member Join Date: May 2017 Drives: 2013 frs '91 s13 sr20 89 4runner Location: Washington state Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Hey I know this is an old thread and I dont post in here often but I am having the same problem with my car not shutting off when I turn the key off. Only happens after at least a 30 min drive. Throwing codes U0122 lost control with vehical dynamic control, P0463 fuel level sensor A high, and P0420 for my absence of my pre cat but that has been on and off intermittently for 3 years since I put the borla header on. I kill the car by stalling it out since it's a manual. Once I turn it on again it will turn off perfectly fine and no codes. After a 30 min or more drive and I try to shut it off same problem traction control light comes on and it starts throwing codes. I thought at first the alternator was backfeeding. Replaced the alternator and still having issues. Next I was planning on checking the ignition switch. I also do have a sync up and drive device from t mobile plugged into my obd2 port. It monitors your car if there is a break in, has a GPS tracker and shows you engine codes. Next step also is unplug it and go for a drive and see if I still have the issue. Here is a list of all mods to the car. 2013 frs Rsenthalpy tune Borla Uel header Cat back Coilovers, rear upper control arms and rear toe arms After market radio with small sub and amp Any advice is appreciated I will keep you guys posted if I figure anything out. Thank you.