My battery recently died, I replaced it and now the check engine light is on, I have a inexpensive code reader and the two codes I pulled, P2122 and P2127, I believe relate to a detected low voltage condition in the throttle position sensor. Is it possible that this popped on because of the dead battery condition? And, if that was the case, clearing the codes and seeing if the light comes back on might be the first step? To be clear, I don't often use this truck, and if I cleared the codes I would be testing it by starting it up and maybe driving it around my property, not out on any public roads.

Thanks for any advice!

 

That would be a good place to start. Low batteries can cause all sorts of havoc.