I drop it off at Sunnyvale VW before heading to work and the service rep diagnoses the problem right away as the gas cap missing causing the check engine light to come on. This video goes trough few things you should do before replacing the gas cap on your vehicle. You should hope, just hope, that the gas cap is the problem. And just now I went out to see and started the car and now both the words gas cap is gone as is the check engine light. This system monitors a number of engine and emissions-related components to ensure that everything is in working order. Gas Cap Code. Just for recording purposes - my "Check Gas Cap Light" came on this morning - pulled over immediately and checked the gas cap (like I should) and it didn't clear the light. Then they also replaced my purge valve. I have an 06 jetta vw. Drives just … I shut off the engine, removed and retightened the gas cap, and restarted but the warning reappeared immediately. They cost $50 - $100, or more. Check engine lights on forever and there is a check gas cap message on the information center. I cleaned the gasket on the cap and cranked it down really well and it hasn't happened since. Volkswagen vehicles built after 1996 are equipped with a system of sensors known as On Board Diagnostics (OBD II). The light would stay on for about 10 minutes and I would hear a thumping sound coming from the back. Continue driving normally with the light illuminated and it should go off within a day or two. I took my car in to the shop because the "check engine" light was on and found out this was simply due to my gas cap being loose. So, cleaning the cap and the filler neck must have done the job and it took till last night to hit the 3/4 to halfway point. I've got a 2006 with ~80k miles, and I've had the check gas cap light come on several times in the past few months. 1999 VW Bettle 2 lt check engine light is on, the check engine light comes on when you put gas in the tank. myfastgti.com is an independent Volkswagen enthusiast website owned and operated by VerticalScope Inc. If the light doesn’t turn off, inspect the gas cap for any damage and replace it if necessary. SOURCE: Check engine light/gas cap will not stay tight. The light does not come on if you just take the gas cap off, you have to … So, my new R is just 60 miles in and suddenly I'm getting a fuel cap warning light. I have a 2002 VW Passat with the check engine light that stays on. The gas cap is secure, the tank was nearly full. Push the "Reset" button on the code scanner to clear the system. The on-board diagnostic computer generates and stores an error code that then must be retrieved so you know what the problem is. Gas caps are inexpensive, so if you have any doubt, replace the cap. I was driving and the weird "Check Gas Cap" symbol came on. My GTI has around 6500 miles on it. If your car isn’t feeling jerky or strange when the check engine light comes on, the first thing you should check is the gas cap. This happened to a friend of mine: The "check engine" light came on in his truck (Toyota). The check engine light should go off after you drive for several minutes if the light was caused by a loose gas cap. After the car was refulled to the max, the car just started, spluttered for a few seconds as if it was going to stall, then after a quick rev it ran fine to the office. These sensors monitor many vital engine functions and help to lower harmful emissions. Crank the engine and drive your vehicle for a day. I made an appointment at the dealership. Connect to the OBD-II port beneath the steering column. Pay attention to the dashboard after the check engine light experience. Light still on. Even if the cap seems secure, it may not be sealing properly. A check engine light can indicate a broad spectrum of problems with your 2011 Volkswagen Jetta. SOURCE: Check engine light/gas cap will not stay tight. My GTI has around 6500 miles on it. Not necessarily!! Loose Gas Cap: Your gas cap is loose, broken, or simply missing Why Check Engine Light Due To Gas Cap Happens. ... Im having the same problem i replaced the gas cap and the light is still on and ya i over filled the gas tank on accident did that mess something up? The "Check Engine" light comes on in your Volkswagen Jetta for a variety of reasons. (RockAuto.com is a MotorWeek Sponsor) A leaky fuel tank cap may be responsible for a lit Check Engine light. Replaced that and reset the code, and the light came on a few days later again. gas cap cleaned and still on. In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. Broight it into the dealer and they said it needed a gas tank pressure sensor. If it "never" goes away, maybe replace the cap with an OEM one, not from the parts store. About four days ago the gas cap light would come on. Tried changing the gas cap also with the same results. The message shortly disappeared but a warning icon remained. Have changed fuel cap and purge valve out. One of the purposes of the fuel cap is to hold vacuum pressure. If you read the codes, still get a … When the light comes on, check the gas cap at the next stop, and then continue on your way. I simply took off the gas cap and screwed it back on correctly and the check engine light immediately went off. Pay attention to the dashboard warning lights to ensure the light does not come back on. The light would stay on for about 10 minutes and I would hear a thumping sound coming from the back. Drove to dealer less than 4 miles. Continue driving the vehicle. the light will go out for a day or two 3 Answers. Any suggestions? The gas cap is a part of the vehicle’s evaporative emissions system and can cause problems with the system if it has an issue. Pay attention to the dashboard after the check engine light experience. Thanks for the help on this. Your gas cap is responsible for keeping your fuel tank sealed, preventing gas fumes from escaping into the air, or worse - into your vehicle. Thanks for the info. Now you think you have to go to a mechanic. Check to make sure the gas cap is tight. I took my car back to the dealer to have a look and it was the radiator and not the damn gas cap. When one of these sensors fails it sends a signal to the engine computer to illuminate the "Check Engine" light in the dash. They turned off the light and it hasn't reappeared, two trips later. Volkswagen vehicles built after 1996 are equipped with a system of sensors known as On Board Diagnostics (OBD II). After uttering an expletive, I went on my way. Step 1 Turn off your vehicle's engine. Content on myfastgti.com is generated by its users. Sometimes, if a Volkswagen Passat Fuel Tank Cap is harmed, the check engine light may illuminate. Gas Cap. If the light stays on after a few days or so, then it’s time to get your Volkswagen … I would double check the gas cap. About four days ago the gas cap light would come on. Several diagnostic have been run and evac hoses as well as gas tank cap has been replaced. Leonardo R. Grabkowski has been writing professionally for more than four years. But if the reason lies in check engine light gas cap, you are salvaged. Diagnostic at dealer "exhaust temp sensor" bad and they would have to order part. Same thing happened to me once. If you cannot tell visually which part has the leak, then I'd say replace the gas cap (get a genuine VW one), and if the code persists, have the … Visit an automotive parts store or dealership service department to order a new gas cap. The light does not come on if you just take the gas cap off, you have to … Posted on Apr 24, 2009 Here are the 10 most common issues that trigger it. purge solenoid and hoses for cracks or kinks,the solenoid is on the inner fender and has 2 hoses, one to the intake and one to the canister, the most common cause of this code is a defective purge solenoid. Open the door. Is it anywhere near the engine? For a better experience, please enable JavaScript in your browser before proceeding. Replace the gas cap. Turn off your vehicle's engine. I would pull the car over and check the cap, but it was always screwed in tightly. 1998 VW Jetta - P0442 EVAP Trouble Code. 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