Truck Won't Start, P0336 and P0337???

[Chungo]

Well just came back from a drive out to the mountains and parked the truck at the Grocery store. Came out and truck would not start, it would crank but not start. Pulled 2 codes out,

P0336: Crankshaft Position Sensor A Circuit
Range/Performance
P0337: Crankshaft Position Sensor A Circuit
Low

Truck was towed to the shop, any ideas as to what might be the problem???
Just trying to mentally prepare myself as the truck is out of warranty and all.

Thanks

[Chungo]

Well I've been in and out of the shop over last few days while they figured out the problem. I had a positive air shutoff installed a couple years ago for work and the install wasn't done properly I guess. Seems that the PAS was wired to the CKP wire (yellow/violet). Tech said that this should have gone onto the alternator and not CKP wire??? I had them removee the control module as I don't need the PAS and all seems to be good. It had also thrown a P0069 code as well.

So far so good and just thought I'd give ya an update inacase anyone else runs into a similar problem.

[superduty6.4]

Originally Posted by Chungo

Well I've been in and out of the shop over last few days while they figured out the problem. I had a positive air shutoff installed a couple years ago for work and the install wasn't done properly I guess. Seems that the PAS was wired to the CKP wire (yellow/violet). Tech said that this should have gone onto the alternator and not CKP wire??? I had them removee the control module as I don't need the PAS and all seems to be good. It had also thrown a P0069 code as well.

So far so good and just thought I'd give ya an update inacase anyone else runs into a similar problem.

Good thing it wasn't something worse.