And the check engine light & "gascap" warning lights were on. However, just because the check engine light is on, doesn’t mean there’s anything seriously wrong with it. Mechanic's Assistant: Is the check engine light blinking or flashing, or is it solid? I have 2007 Jeep Wrangler. Changed MAP Senso … read more If that doesn’t do the trick, then buy a replacement gas cap at an auto parts store. @JeepCares Old age sucks! Anyone with a similar issue? If you find that the light keeps coming on, and goes off again once you tighten the gas cap, then your gas cap … Tightened it. 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. I have 2010 JK and the check engine light came on but it is not flashing. A check engine light can indicate a broad spectrum of problems with your 2005 Jeep Wrangler. 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. JavaScript is disabled. As she forgot to put it back on the last time she filled it up, 2 weeks ago. Thanks all for the tips. Got a new gas cap, got it inspected. Gas Cap Bad– A bad fuel cap can cause the P0442 code to be thrown for sure. I just purchased a 2007 Jeep Wrangler and it's got a check engine and gas cap light on. Wondering if the gas cap is defective. to diagnose and replace the cap. Then you can make a good decision as to what needs fixed! We've had this same issue with ours and the gas cap light/check engine on our 2018 Jeep Wrangler JL Rubicon. On my previous vehicles I would just unplug the battery, so I did this on the JL the car still had voltage and still turned on. When your check engine light comes on, this could be as authentic as tightening or replacing your gas cap. I guess my wife's Jeep doesn't have the "gas cap off check engine light option". There are hundreds of things that can trip the check engine light, some so simple as a loose gas cap. If your gas cap is not properly attached you may see a check engine light or a loose cap warning light on the dash. I'll try it too and then order a new one if it doesn't work. My daughter’s Jeep check engine light is on. You can either tighten the cap and wait for the system to reset itself when it determines the problem is fixed, or you can use an OBD-II code scanner to manually reset the system. Jeep Wrangler TJ Showcase. Jeep Wrangler JL Showcase. I wiped down the gasket & filler tube as described above and also disconnected negative lead on battery and warning light went away. 2. 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. What year is your Jeep ? Changed MAP Senso … read more 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!!! How do you clear the check engine light on the JL? Maybe the last attendant to fill the tank nicked it with the fuel nozzle. If your cap is missing or the seal is dried and cracked then you may get a "Check Engine" light on your dash and have issues passing a vehicle inspection. Off and on the last few months after filling the tank with fuel the check engine light comes on. 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. It blowed my mind. I guess my wife's Jeep doesn't have the "gas cap off check engine light option". Jeep Wrangler Check Engine Light Reset All modern jeeps come equipped with a PCM or (Powertrain Control Module) which scans all sensors and signals from components throughout the vehicle. 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. 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? 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 Anything else you want the Mechanic to know before I connect you? 2007-2018. As she forgot to put it back on the last time she filled it up, 2 weeks ago. 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. If that doesn't work for you, you may need to get a new cap. The gas cap will make the check engine light go on. Same thing happened to me once. 3. I have a 2007 jeep wrangler with a gas cap engine light. I cleaned the gasket on the cap and cranked it down really well and it hasn't happened since. 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. Thanks for the maintenance tip. All you have to do is click on this link. You should be able to cycle the key off and on five times to read codes. checked the codes but only the gas cap code came on. 2009 Jeep Wrangler Solid. once again, after about 30-40 miles, theres the two lights on. If so, simply tighten it. The Wrangler will typically be warning you to tighten the fuel cap. Check engine light came on two days after purchase on my jlu 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. Registration is FREE and takes seconds to do. If that doesn't work, the next thing to check is the 'ESIM' - Emission System Integrity Module. I found this thread and ran to AutoZone to get a new gas cap. 1987-1995 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. couple days later it starts all over again. I 've replaced the gas cap with a factory locking cap… Gas Cap Check engine light. A forum community dedicated to Jeep Wrangler owners and enthusiasts. If your gas cap is not properly attached, you may see a "Check Engine" light or a "Loose Cap" warning light on the dash. Your best bet is to get your jeep scanned for free at a local auto parts store, such as autozone. The obvious first step to the "gascap" indicator is to simply replace the gas cap. Not the way to start ownership of my first Jeep. I think the code wasP0422, indicating it needed a new gas cap. This is a white looking device that plugs right into the canister. If your Jeep check engine light comes … We're going to take it into the dealership to have them check it out as it seems to be possibly something software related. Mechanic's Assistant: Can you confirm the year and model of your Jeep? My brother works as a mechanic and sees this all the time, They get $75. 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. Did you know a 2016 Dodge Challenger gas cap works on a 2017 Jeep Sahara? One of them the total time without a cap was close to 400 miles and never got any kind of code. 1997-2006. It turned on, took it to autozone and it gave me a loose gas cap code which in fact was loose. I haven't called back yet to ask if this gas cap is made of platinum or simply 24k gold. 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! I later learned that the JL has 2 batteries I have 2007 Jeep Wrangler. 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. 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. It comes on each time I start the engine and goes away after I reset it. Jeep Gladiator JT Showcase. http://opensiuc.lib.siu.edu/cgi/viewcontent.cgi?article=1006&context=auto_pres, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. The seal on the fuel cap is the last checkpoint on your emissions system. There’s a tool to check the fit right there. If you're able to pull the code I can look it up for you. Waited almost two months to get the part in. Are you leaving it running while filling up? 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. It is possible one of those can be the cause of the continued gas cap light … When the PCM detects any problems it sends a code that is displayed in your instrument panel. Next day the gas cap light. I recently replaced a damaged evap canister. Drove a few miles.. still on. Replace the cap. I have a 2009 Jeep Wrangler and my check engine light came on when everything seemed to be running okay. Trying to get the car inspected so cannot be ignored. 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. Stupid me though...should have done them one at a time to see which one worked. This Mopar Non-Locking Fuel Cap is a factory part for your Jeep Wrangler JK and does more than just cover your fuel filler. Should I bring it to the dealer or this is not something serous? $10.99+tax. I was having this problem. Had cap replaced twice 2015 Jeep Cherokee Latitude 4WD This just happened to my wife's 09 JKU. Wiped down the rim on the filler tube. Gas cap light comes on for a day, goes off and engine light comes on for a few days and goes off. My daughters jeep check engine light is on. I'm now getting a gascap warning on my instrument panel. Light continues to come back on. The check engine light should go off after you drive for several minutes if the light was caused by a loose gas cap. Welcome to WAYALIFE!! So they said it needed a new gas cap for the low, low price of $140!!!! Brought it to the dealer and they claim it was a evap canister. Did you know a 2016 Dodge Challenger gas cap works on a 2017 Jeep Sahara? I replaced 2 gas caps. 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 tightened the gas cap but it is 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. Check the o-ring/seal on the cap and the top of the fuel filler neck. Anybody know if this is a common problem?? I replaced 2 gas caps. From a loose fuel cap to a cylinder misfire, there are several reasons why the check engine light may turn on. I have a 2008 Jeep Wrangler JK. Yep, sure does. For a better experience, please enable JavaScript in your browser before proceeding. 225169 Got into the jeep this afternoon and the gas cap and check engine light is on. Jeep Wrangler JK Showcase. Two days later check engine light back on. No problems since. What could cause the check engine light to come on in a 2017 Jeep Wrangler? 2020-2021. Might want to wet down a paper towel with windex and wipe these surfaces/seals as well. Wiped down the gasket on the cap. http://wayalife.com/showthread.php?2...-Jeep-TJ-Build. Damaged, lost or stolen fuel cap? Usually they will scan your code, and tell you what the most likely cause of the code is. Pay attention to the dashboard after the check engine light experience. Hi there, I am a newbie here. Trying to get the car inspected so cannot be ignored. Oh well. Restarted... still on. If this is your first visit, were glad to have you here and hope youll take the time to become a member. When did you first notice it? Also look on the filler neck for any dings or dents. I checked the gas cap multiple times and the light stayed on while driving around as well as the check engine light. Found the gas cap barely in the filler hole (thanks for the tank full of fuel anyway). Yep, sure does. Thank you. Ashamedily, I have forgotten the gas cap while refueling on road trips. 2018-2021. Gas cap and check engine ligt on. The system will show Gas Cap when a small leak is detected and it may not have anything to do. Just got home with my shiny new Rubicon with the 2L... check engine light came on 5 miles out. Taking these two measures will save you the expense of running a diagnostic on your Jeep. drove it for a bit and BOOM! This issue has been present for over two months now. 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. Filled it up, 2 weeks ago driving around as well disconnected lead! While driving around as well as the check engine light came on it... And it gave me a loose gas cap Bad– a bad fuel is! The gasket on the filler hole ( thanks for the tank with fuel the check light! Integrity Module of $ 140!!!!!!!!!!!!! Sends a code that is displayed in your browser before proceeding Damaged, lost or stolen cap! Blinking or flashing, or is it solid it up for you have gone over 200 miles the. 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