Limp Home Mode Question
Alright guys, I think I could use a little help. I have 2 2005 f150's, one purchased new, the other used. I'm a heavy duty diesel mechanic that works on tractors and trailers, VERY limited knowledge of light duty trucks.
My wife's F150's yellow wrench popped up the other day on the way to work. I learned from the owners manual (and this site, thank you very much), that thats limp home mode. She said driving 10 MPH down the shoulder of the highway was no fun. She turned the truck off and on, and the light did not come back for the rest of the ride home. However, the light was NOT accompanied by any normal check engine light.
I call the snap-on guy at work, and asked him if he had a code reader on his truck. He said he'd drop it off where I work later today. My question is, if the truck goes into limp home mode without the standard check engine light, will the ecu still have a stored code so I have something to go by?
But then again, if there was no normal check engine light, does that mean that maybe it is a sensor that is not engine related? Like perhaps a trans neutral switch? Its an auto trans and I don't know anything about autos... Do they even have a neutral switch? hahaha
Thanks for any help that can be provided!
PS, we rented a car for a couple of days just in case.