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