it cant be fixed just tightend your gas cap harder
P0420 Is an evaporative emissions system leak code. This code is most often caused by a bad or loose fuel cap. It is also often caused by people refueling their vehicles with the engine running. It can also be caused by a leak in the system that has nothing to do with the fuel cap or refueling.
How do you know the gas cap is responsible for the Check Engine light? The computer will have to be cleared by a repair shop with a scanner.
A common cause for that code would be a loose gas fill cap or a damaged/missing O ring seal on the cap.
Your check engine light will come on and the computer will give you an emissions code reading. I have had 2 cars show this code and it went away after I replaced the gas cap. Hope this helps.
I replaced a broken Gas Cap 2 weeks ago and the Check Engine Light came on 1 week ago. I got the code P4055 today - and am hoping that the New Gas Cap will fix the problem. How can I reset the Check Engine Light?
The airport code for Cap-Haitien International Airport is CAP.
CAP code
The airport code for Cap Skirring Airport is CSK.
i had replaced that one it is your resivor cap that year did not have a regular radiator cap its only 10.00 but yes its the resoivor cap
Code P1399 means:Random missfire Plugs not gaped right might want to check them since you just replaced them or plug wire loose?
First start with checking your gas cap. : I had this code with my olds intrigue 98. I found out that the fuel "filler neck" was cracked and leaking, so i bought the part and had it replaced.