Yesterday i was driving any on the dash my check engin light came on and it said my gas cap was off which wasnt true. I know that if the gas cap is off then the engin light will come on has anyelse had this issue? Does anyone know what went wrong?

Thanks for the help
Sam

 

You might have a leak. Could be the gascap, punctured tube or else.

 

What year? I have a 2012. This happened to me about a year ago. The solution was to tweak the rubber hose where it goes into the evap canister. I guess the seal was compromised. By just wiggling that hose the light went out and hasn't come back since. I tried doing stuff with the gas cap but it had no effect. The evap hose was the culprit.

 

My light came on with the same code, I did the same thing rob did and it hasn't come back on.

 

If it's not the evap hose, then try swapping the gas cap with a new one. They're supposed to hold a certain pressure, and if the cap fails, the computer thinks the cap is off.

 

Thanks guys for the help ill try wiggleing the hose and if not ill get a new cap. Im also bringing the jeep i tomarrow for its oil change and some other miscellaneous stuff so i might have them look at it if what i try doesnt work
Thanks
Sam

 

About a year ago I had a similar problem and cured it by removing the gas cap, wiping the filler neck sealing surface with alcohol and applying a thin film of grease to the sealing surface. Wiped down the seal on the gas cap and reinstalled the cap; reset the CEL and so far the CEL has not returned.

 

Hey there.. been dealing with a similiar issue with my 2007 . When hubby filled it up he left the gascap off.. two days later the gascap warning came on, two days later the check engine light came on. I discconected the battery to reset the codes.. same issue.. gascap light followed by the check engine light. I replaced the gascap, disconnected the battery.. two days later no gascap warning.. but just the check engine light came on..evap ? any comments or suggestions?

 

It's likely the tube going into your Evap canister. Try tweaking or tightening that connection. That happened on my 2012.

 

I've been having a similar problem, just started last week and is happening about every other day. I disconnect the battery and it is OK for a couple of days then its back. I checked the codes which were; P0441 and P0455. I checked the gas cap and it was very snug, checked for loose hoses both under the hood and back by the evap .can, everything seems OK. I put a Superchip Flashpaq about 3-4 weeks ago and it ran fine until now. Would the Superchip cause this problem? I was trying to keep from taking into the dealer if at all possible.