I started my 2003 after it was sitting for about 2 weeks this afternoon. The battery was very low, the voltmeter went down to about 8 volts while starting, and it almost didnt turn over but It did start, (and runs fine) but then the CEL came on and stayed on. I checked codes with a cheap bluetooth/cellphone OBD scanner and got p0335 crank position sensor A circuit, p0336 crank position sensor a circuit range/performance, and p2509 ecm pcm power input signal intermittent. I tried to clear the logged faults with the scanner, but the CEL stayed lit and remains lit still after a few starts. The battery charged up because I drove the truck and starts and runs fine. May be my imagination but it kind of feels like it takes another half revolution or so to start than it did before. I've used this scanner to successfully clear codes in our dodge minivan before, so I know it works. Are the codes not clearing with my scanner because it needs to be done another way, or because something actually was damaged rather than just a power sag during that one startup generating the code?

 

Clear codes with ignition on, engine off.

 

Thanks, that worked for the p0335 and p0336, but the p2509 would not clear after repeated attempts. Truck starts and runs fine. I heard leaving the batteries disconnected for 30mins may reset everything, is that what I should do or will it go away after a certain number of starts or running time?

 

30 minutes may, or may not be long enough. That's the intermittent power signal. No idea which wire it is whining about there, but, wouldn't hurt to check PCM connections.

 

I'll leave it overnight and then check the connections.thanks

 

Left the batteries disconnected for about 4 hours today and all 3 of the codes are back and cannot be reset. I refuse to believe one startup on a weak set of batteries would cause an actual component failure, any clue as how to actually reset this? truck runs perfectly. I'm using this reader:
https://bafxpro.com/products/obdreader
with torque lite android app:
https://play.google.com/store/apps/d...hl=en_US&gl=US

 

Probably a wiring issue then......