hey guys i have about 25k on my truck, and a nelson tune with the mods in my sig for about 1500 miles. my check engine light came on today, after a key cycle. the code is p0315. cam/crank sensor positiion error. is this something that you guys have run into with a tune? just wondering if i need to pursue it or just clear the code. the truck is running perfectly fine, idle, cruise, and WOT is all good.

 

check engine still on, everything still runs fine.

 

isn't that the "crank relearn" code ?

 

YUP! Anyone with A Tech II can perform the relearn or erase the code. It can be done using HPT as well...I've heard that sometimes it comes on with a new tune...did u call Allen and ask him about it? He might send u out a new one or u can simpl;y head over to the nearest dealer and ask them to help u out. R/

 

CPS relearn ( Crankshaft positioning sensor variation not learned) It wont hurt anything but you should see about getting a relearn done via a Tech II or some form of tuning software. It only takes a couple min to do. A different could do the same thing, it just happens. Sometimes a tune with kick that code and it has to be relearned. Just part of the game.

 

Ya I had that code I had to do a crank relearn. I had to drive 70 miles to get it done by Rick at Synergy, but thats just me and where I live sucks. Good luck.

 

thanks guys. i downloaded some info from westers website. the trucks running fine, i wasnt really worried about it. a friend of mine is the shop foreman at the gmc dealer out here, ill have him do it, i just dont wanna screw up the tune. will performing the re learn change anything on the tune?

 

Nope.