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