"check engine" light

[StagLefty]

Last weekend when Skully was looking for help siphoning gas from one of his vehicles I offered to help with a Super Siphon hose I had.
Some one else mentioned that the newer vehicles have an obstruction in the filler tube that prevents that now.
Sure enough I tried it in my truck and could only get the hose in about 4". Next morning when I went out the check engine light was on and stayed on. First time since I owned this truck.
Did I hit some kind of sensor ? I've checked all the normal things fluids,air filter etc. and all seems fine. Truck is running fine.
I'm guessing with all the sensors on vehicles now that I may have caused this myself. Any clues from you motor vehicle guys would be appreciated. Thanks in advance.

[streetglideok]

Go by Autozone, and have them pull the code(s). Don't let them sell you their trash. You likely have an evap emissions code, P0440-P0450. Make sure your gas cap is tight, three clicks or whatever it says to tighten it to. Have them clear the codes if it is an evap code and your cap wasn't tight.

[BushMasterBoy]

I'm guessing it the gas cap. Autozone or any major parts retailer should have a code reader to tell you what the error code is and will check it for free.

[Rabid]

^this^

[ruthabagah]

If you do have a newer Ford SUV/Truck with no gas cap, there is indeed a switch/sensor that maybe jammed. It happened recently to a coworker on his Explorer. Just my 10 cents.

[BigNick73]

Yup, sensor. Go on ebay and you can get OBDII reader for $10. This is the one I use http://www.ebay.com/itm/Auto-ELM327-...item4855da1a4b

The bluetooth one wont work with iphone, need the wifi version for that but runs great on my samsung android tablet. I use the torque app on droid (about $5).

[vossman]

My light came on yesterday too. Cars running fine though. I will get to it this weekend.

[bogie]

I've got an OBD II scanner if you want to swing by and pull the codes off.

[StagLefty]

^ pm sent-I'd like to see these toys you young un's are talking about.

[bogie]

^ pm sent-I'd like to see these toys you young un's are talking about.

lol it may sound impressive but it's just a crappy little plastic box with a chip in it.