When your check engine light comes on, this could be as authentic as tightening or replacing your gas cap. I have a 2009 Jeep Wrangler and my check engine light came on when everything seemed to be running okay. Tightened it. Should I bring it to the dealer or this is not something serous? When it comes on I remove the fuel cap and put it back with several clicks and the light goes off after several run cycles. My daughters jeep check engine light is on. It is possible one of those can be the cause of the continued gas cap light … I replaced 2 gas caps. Waited almost two months to get the part in. If so, simply tighten it. Yep, sure does. Solid. Your best bet is to get your jeep scanned for free at a local auto parts store, such as autozone. Thank you. Ashamedily, I have forgotten the gas cap while refueling on road trips. Check engine light on, gas cap light on codes P0456, P0457 also every so often around 2000 RPM/ 30-40 mph there's a stutter/jerking. I wiped down the gasket & filler tube as described above and also disconnected negative lead on battery and warning light went away. 2. Jeep Gladiator JT Showcase. I tightened the gas cap but it is still on. This just happened to my wife's 09 JKU. Welcome to WAYALIFE!! The seal on the fuel cap is the last checkpoint on your emissions system. 1987-1995 Funny dealer story though...I bought my '08 Wrangler about a month ago and took it to dealer to have open recall item looked at. 225169 Got into the jeep this afternoon and the gas cap and check engine light is on. If that doesn’t do the trick, then buy a replacement gas cap at an auto parts store. Thanks for the maintenance tip. One of them the total time without a cap was close to 400 miles and never got any kind of code. I have a 2007 jeep wrangler with a gas cap engine light. 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. Gas cap light comes on for a day, goes off and engine light comes on for a few days and goes off. A forum community dedicated to Jeep Wrangler owners and enthusiasts. Leaking fuel tank; Jeep Code P0456 Severity – Low It is unlikely the driver will notice any symptoms with Jeep check engine light code P0456 other than a slight odor of fuel, decreased fuel economy, and the check engine light. Brought it to the dealer and they claim it was a evap canister. How do you clear the check engine light on the JL? Jeep Wrangler TJ Showcase. Each time I have gone over 200 miles before the next refuel and realizing it. Pulling it out is simple and requires no tools - make sure the check valve moves back and forth freely - if not, clean it, or better - just replace it as it's only a $15 part. Drove a few miles.. still on. Oh well. Changed MAP Senso … read more Taking these two measures will save you the expense of running a diagnostic on your Jeep. Check the o-ring/seal on the cap and the top of the fuel filler neck. Usually they will scan your code, and tell you what the most likely cause of the code is. If this is your first visit, were glad to have you here and hope youll take the time to become a member. Gas cap and check engine ligt on. Pay attention to the dashboard after the check engine light experience. We're going to take it into the dealership to have them check it out as it seems to be possibly something software related. If your gas cap is not properly attached, you may see a "Check Engine" light or a "Loose Cap" warning light on the dash. Changed MAP Senso … read more I just purchased a 2007 Jeep Wrangler and it's got a check engine and gas cap light on. Next day the gas cap light. My brother works as a mechanic and sees this all the time, They get $75. Gas Cap Bad– A bad fuel cap can cause the P0442 code to be thrown for sure. Got a new gas cap, got it inspected. Not the way to start ownership of my first Jeep. 2007-2018. http://wayalife.com/showthread.php?2...-Jeep-TJ-Build. The Wrangler will typically be warning you to tighten the fuel cap. For example, if the cause of your check engine light coming on was a loose gas cap, if it's tightened, the light will turn itself off. 2020-2021. I 've replaced the gas cap with a factory locking cap… Gas Cap Check engine light. Anybody know if this is a common problem?? The check engine light should go off after you drive for several minutes if the light was caused by a loose gas cap. The obvious first step to the "gascap" indicator is to simply replace the gas cap. Check engine light on, gas cap light on codes P0456, P0457 also every so often around 2000 RPM/ 30-40 mph there's a stutter/jerking. Anyone with a similar issue? I have a 2008 Jeep Wrangler JK. Stupid me though...should have done them one at a time to see which one worked. The check engine light on your 2018 Jeep Wrangler will frequently shut itself off if the issue or code that caused it to turn on is fixed. 1997-2006. The gas cap works along with components like the charcoal canister and EVAP purge valve and/or solenoid, to allow fumes from the fuel tank to be vented forward to the engine where they are burned off during normal engine operation. JavaScript is disabled. I guess my wife's Jeep doesn't have the "gas cap off check engine light option". Restarted... still on. It comes on each time I start the engine and goes away after I reset it. When did you first notice it? Trying to get the car inspected so cannot be ignored. I cleaned the gasket on the cap and cranked it down really well and it hasn't happened since. We bought a new gas cap, cleared the code and it went away for a few days but before she could get it inspected, the light came on again. 2009 Jeep Wrangler Off and on the last few months after filling the tank with fuel the check engine light comes on. Hi there, I am a newbie here. If you're able to pull the code I can look it up for you. I think the code wasP0422, indicating it needed a new gas cap. Some of the most common things that could trigger the check engine light are missing/ loose gas cap, faulty ignition coils, dirty or damaged mass airflow sensor, faulty spark plugs, oxygen sensor, and catalytic converter. Damaged, lost or stolen fuel cap? This is a white looking device that plugs right into the canister. It turned on, took it to autozone and it gave me a loose gas cap code which in fact was loose. couple days later it starts all over again. Replace the cap. I was having this problem. 2011 Wrangler Check engine light ... have replaced gas cap and tube to gas tank .. system checks good and runs for about - Answered by a verified Jeep Mechanic. I'll try it too and then order a new one if it doesn't work. I have 2007 Jeep Wrangler. All you have to do is click on this link. This issue has been present for over two months now. Mechanic's Assistant: Is the check engine light blinking or flashing, or is it solid? Thanks all for the tips. The system will show Gas Cap when a small leak is detected and it may not have anything to do. If you notice your check engine light turned on immediately after filling your tank, pull over and check first to see if the cap is loose. Might want to wet down a paper towel with windex and wipe these surfaces/seals as well. Found the gas cap barely in the filler hole (thanks for the tank full of fuel anyway). Had cap replaced twice 2015 Jeep Cherokee Latitude 4WD If your gas cap is not properly attached you may see a check engine light or a loose cap warning light on the dash. Are you leaving it running while filling up? Come join the discussion about reviews, performance, trail riding, gear, suspension, tires, classifieds, troubleshooting, maintenance, for all JL, JT, JK, TJ, YJ, and CJ models! A check engine light can indicate a broad spectrum of problems with your 2005 Jeep Wrangler. I haven't called back yet to ask if this gas cap is made of platinum or simply 24k gold. And the check engine light & "gascap" warning lights were on. 3. Mechanic's Assistant: Can you confirm the year and model of your Jeep? Wondering if the gas cap is defective. If you find that the light keeps coming on, and goes off again once you tighten the gas cap, then your gas cap … I guess my wife's Jeep doesn't have the "gas cap off check engine light option". My question is can the gas cap also make the check engine light come on or does it seem like something else is at play being that both lights are in? I have 2010 JK and the check engine light came on but it is not flashing. No problems since. We've had this same issue with ours and the gas cap light/check engine on our 2018 Jeep Wrangler JL Rubicon. Likewise, the check engine light could also be a warning of a relentless problem that could cause relentless damage to your engine and come with a great repair bill. If your Jeep check engine light comes … Two days later check engine light back on. By determining the proper Wrangler engine code, you can get a clear idea of the root of the problem so you can find a solution. Jeep Wrangler JK Showcase. once again, after about 30-40 miles, theres the two lights on. My check engine light came on with two codes and i replaced a sensor and had the computer reset and within 15 miles the check engine light came bac... i have the gas cap message on my dashboard is it really my gas cap - 2008 Jeep Wrangler The gas cap will make the check engine light go on. If it comes on again I can always try it again or else head to the dealership for one of those "special" $140 gas caps!!! I replaced 2 gas caps. I later learned that the JL has 2 batteries Old age sucks! So they said it needed a new gas cap for the low, low price of $140!!!! I checked the gas cap multiple times and the light stayed on while driving around as well as the check engine light. Anything else you want the Mechanic to know before I connect you? Fuel Vapor Hose– A leak in the fuel vapor hose that leads from the fuel tank to the intake will definitely throw P0442 in your Wrangler. Code wasP0422, indicating it needed a new gas cap but it still! 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