CT4-V Check engine light

[Metal4all6]

My CT4 BW popped 2 codes today. Any ideas what these could be??

I was getting my car ready today to be put away for the winter so I added 8oz of Stabil to half a tank of gas. I then drove to the gas station to top off the tank (2 miles away) and popped the CEL on the way. I filled the tank, went home, checked the codes, and then changed my oil (which sucked, see my post in the CT4 oil change thread).

Initially thought the Stabil screwed something up, but both codes seem to be for the ignition system. The car starts and runs fine so I have no idea. I also had 2 messages pop up on the dash - one said something about the power could be reduced (though I didn't notice anything) and the other said to service the rear differential? Strange!

I cleared the codes so I guess I'll see of they come back.

 

[raptor5244]

Codes come up as MAF self test error and ignition switch issue. Maybe just a fluke. I saw something about a weak battery could cause this as well.

 

[Metal4all6]

Codes come up as MAF self test error and ignition switch issue. Maybe just a fluke. I saw something about a weak battery could cause this as well.

That is probably it - drove about 10 miles today and no CEL. Hope it stays that way!

 

[rdollie]

General rule of thumb with modern cars I follow is, if I see multiple warnings and have no visible signs of an issue anywhere, it's time for a battery check!