check engine light came on after fill up

We were having very frigid temps and major snow and ice filled up my truck on the way home just in case needed to get out. Five miles down the road ck engine light comes on. pulled over listened no strange sounds, not hot, idiot light for oil pressure not on, cked under hood belts all in place. headed home pulled in garage, couldn't find anything wrong. Bad gas maybe? Any suggestions? Never had light come on.

 

Gas cap on all the way? Take it off and put it on again for good measure.

 

Check your gas cap.

 

Not tightening your gas cap will cause the check engine light to go on.

 

This is my guess as well.

 

This

 

Make sure it clicks at least once

 

Go to Autozone and get the code read and reset. As everyone else mentioned, it's probably the gas cap.

 

Thanks guys for the input. Did check my gas cap, no help. Was trying to catch my cuz at the auto shop for a code reading but haven't got that done yet.

 

autozone, advance, o'reilly's will read your codes for NOTHING...

 

tighten the gas cap then take off the negative battery cable for a few seconds and put it back on it should reset your computer..

 

double checked my gas cap and added a Lucas gas treatment. Thought about the battery cable, but didn't know if that would work or not. Thanks guys it is so nice to be able to talk Toyota with someone that knows what the hell they are talking about.

 

did you happen to get a different brand of gas than usual?
or same stuff from a different place, even?

i've never had my CEL come on with Chevron; but, have had it come on 3 times with Conoco and once with Mobil
that's not to say Conoco and Mobil are bad... maybe my truck just gets pissed when i change things up on it (i'm being half-sarcastic)

 

No, I filled up at the same place as always. But found out the transport had just made a delivery. I try to stay away after they get a load because they say it stirs everything up trash wise. You would think that it would be filtered enough not to make a difference. Anyway pulled my neg. cable off when got home last night cleared my computer I guess, engine light went out and hasn't came back on yet.