Gas Cap Indicator Light

The spore carrier and media ampoule are contained in a plastic vial topped with a blue cap. Reduce speed and load. A loose radiator cap. If so, we can help with our selection of interior LED lights, and truck bed lights that can illuminate dark places in the cabin, under the hood, or under a tonneau cover or truck cap. Reduce your speed and, if possible, the weight you're carrying. Remove the gas cap and put it back on, turning it until it clicks three times, then wait 24 hours to see if the code resets; or, reset it using an OBD scanner or the DIC. I have driven it about 1500 miles so its practically new and this light has been on for the last 7-8 times i have been driving it. Electric power steering (EPS) system warning light. If the indicator light comes on in yellow it means caution and that you should have the vehicle checked. Next, try tightening your gas cap. Your actual mileage will vary depending on how you drive and maintain your vehicle. This could also be the case if the gas cap is not the right one for your Mazda. Save on Gas Caps with great deals at Advance Auto Parts. Some vehicles have a separate indicator that warns of a loose gas cap before the condition sets off the "check engine" light. In most cases, simply replacing the old or missing gas cap with a new one will allow the vehicle to pass this portion of the test. My dash warning to "check gas cap" came in this past week. Checked for engine codes and came back with P0457, which indicates small evap leak. Mar 07, 2016 · In my experience, a MIL with no performance issues is usually evaporative emissions related. Jul 21, 2014 · Check Engine Light (MIL); Why You Cant Ignore It (Malfunction-Indicator-Lamp) Often a loose gas cap will fire off the light too and even if you tighten the gas cap it may take a while for. They can't get me in until the 18th of April. When the clutch is "out", the display indicates the current gear, or a large "N" when the transmission is in the neutral position. Your dashboard is designed to keep you informed about the health of your vehicle. I went back to the gas station and asked if anyone had turned in a gas cap recently. One thing that can really throw us for a loop is when the check engine light comes on in our vehicles. A check engine indicator is a malfunction-indicator light or MIL for the computer-management system. When you use our website, we collect personal data about you and your use of the Website, through cookies and analytics tools. I checked the gas cap (duh). Exceeding input ratings can damage the equipment. Your check engine light, or what Acura frequently calls the malfunction indicator lamp, may stay on for a few seconds, but it should turn off under normal conditions. Guide to Volkswagen Dashboard Warning Light Meanings. The Red indicator will light and the audible tone will sound for a short period of time and then the Green indicator. Remove the protective sensor cap. Gas Cap Warning On Dash. After driving around for so many miles, your car will eventually clear the light, provided you have reset the gas cap on properly. I put it on the last time I got gas this past Sunday and I did it until it clicked several times. Check engine + Gascap light issue - 2007 Wrangler X Hi, guys! I just purchased a 2007 Jeep Wrangler and it's got a check engine and gas cap light on. You Might Have a Loose or Faulty Gas Cap If that dreaded check engine light comes on, the first thing you should check for is a loose or faulty gas cap. Try what FishnAlaska suggested. But before I replace it, I want to clean the gas cap thoroughly to rule out that the coincidence of the lack of air release sound and the check engine light is not just a coincidence but rather a cause and effect. Most Toyota owners will find that when the Check Engine and VSC lights are lit, there is a problem with an O2 Sensor or gas cap. Nov 09, 2010 · My check engine light keeps coming on for CHECK GAS CAP. You don't need to use a scanner to reset Audi check engine light as long as the problem was resolved. The molecules of carbon dioxide reacted with the water, forming carbonic acid, and changed the color of the indicator. For all your Harley Davidson motorcycle parts, accessories, and gear, turn to our online motorcycle parts and accessories store. FireBrick Termination Cap for Gas. The gas cap light came on a year ago and I replaced with an after market cap. This problem is usually very easy to fix. If the "check engine" light is blinking or you notice any serious performance problems, such as a loss of power, reduce your speed and try to reduce the load on the engine. You’re driving down the road on a sunny day. Clean the gasket on the cap, and apply a light film of grease. If any light is still ON, this indicates a situation that needs attention. My gas cap warning light came on this morning, I thought I would fill the car in case the cap is loose. This light doesn't specify the nature of the problem. According to the Honda Accord manual, a. For all your Harley Davidson motorcycle parts, accessories, and gear, turn to our online motorcycle parts and accessories store. Check engine light is the most common indicator light that appears on dashboard. And the check engine light & "gascap" warning lights were on. We suggest that you unscrew the gas cap and re-tighten until it clicks, then allow the gas cap check engine light up to a day to reset. Be thankful you have a "tighten fuel gap" light. Took off fuel cap and put it back on. The image symbol, which is really half of a car with an unscrewed gas cap, can look like a water pitcher with a screw or bolt next to it. Provide complete 140F simmer-to-rapid-boil flexibility on all burners; the burners are sealed to the cooktop for easy cleaning. Check Gas Cap message came on, followed by Check Engine Light (I understand why the check engine light comes on following the Check Gas Cap, and I understand the whole evap pressure system as the root of the indicator). This could result in loss of engine power. 5mm Metal Push Buttons, Selector Switches, Contact Blocks, Legend Plates and Pushbutton Enclosures. Loose fuel cap: Before you start looking through all sorts of vehicle components, first check out the gas cap. In such cases, the light stops blinking as soon as the gas cap is tightened. This insert is a great way to know what gear you are in!!. • If the Malfunction Indicator Light illuminates, potential catalytic converter damage is possible. According to the Honda Accord manual, a. Find trailer us xprite for sale today on the internet. Conveniently located on the handlebar for line-of-site viewing, the bright LED display is easy to read with a quick glance. I put together a video discussing a problem my neighbor had with Nissan Maxima four door sedan after they filled the fuel tank. You don't need to use a scanner to reset Audi check engine light as long as the problem was resolved. Anyway, I bought a new gas cap from AutoZone and had the sales guy turn off the lights. Does it go off over time - or so many restarts ????. Of course, when I found out what it was, I took the gas cap off, checked it out, and put it back on. Then 2 weeks ago, it was glaring at me. I have a 2007 Jeep Liberty. It has stayed on. This arrow points left , so the car's filler cap is on the left. A messed up gas cap situation accounts for over seven percent of the situations that a check engine light goes on, which is actually quite a bit higher than a lot of other reasons. If you have run out of gas, this could cause a Malfunction Indicator Light to appear. The carbon dioxide from the carbonated water dissolved in the indicator solution. A set of two small green light symbols indicate that the side lights or headlights are shining. They suggested replacing the gas cap for $25. Electronic power steering (EPS) system warning light. My check engine light came on and I did the "key trick" to retrieve the code. He replaced the gas cap and the light shut off. The ECU is located on the driver's side on the right of gas pedal below the steering wheel. Symptoms of a Bad or Failing Gas Cap. My check gas cap light came on the way home from the dealer. This morning I start my car and the malfunction indicator light goes on. Next, try tightening your gas cap. The cruise SET indicator light does not illuminate when the cruise control switch (CANCEL) is pushed or the system is disengaged. A check engine light means the onboard diagnostic system sees a problem. A few months back my "check fuel cap" light came on. I put together a video discussing a problem my neighbor had with Nissan Maxima four door sedan after they filled the fuel tank. What Does The Check Engine Light Mean When Illuminated?. Compliant with ANSI/AAMI/ISO 11138:2006 Parts 1 and 2. What you can do: Normally, the glow plug indicator light will come on only when the engine is cold. Now I want to place an indicator light (LED) for each valve, so whenever the valve is open, the light comes on. Provide complete 140F simmer-to-rapid-boil flexibility on all burners; the burners are sealed to the cooktop for easy cleaning. Check and Adjust Gas Input and Burner Ignition CAUTION Equipment Damage Hazard. Check Engine Light. Sep 09, 2015 · If the system cannot draw a vacuum, it concludes that the fuel cap is probably not sealed and lights the fuel cap warning light. Or any warning light for service reminder which appears on the display. Oct 23, 2019 · Under a regional cap-and-trade plan that a dozen states still He represents gas stations and some fuel suppliers in the region. Normally, the service engine soon light will stay on until the engine is cranked, then turn itself off if no malfunctions are present. If the indicator light comes on in yellow it means caution and that you should have the vehicle checked. If you're not mechanically inclined, I would recommend you change the gas cap to a brand new Toyota one (not a cheap. But if you've tried a new factory gas cap and still get that message, I think it's fair to say that the gas cap itself is not the problem; the pressure is escaping from somewhere else. Selecta Products SL53413-6-BG 1/2 Inch 125 VAC Green Neon Raised Indicator Light. so here it goes. Some vehicles have a separate indicator that warns of a loose gas cap before the condition sets off the "check engine" light. Reduce your speed and, if possible, the weight you're carrying. I recently put in some STP gas additive to clean valves and carburetor. My advice is to get a new gas cap and if that doesn't work you will need to check your filler neck and fuel lines for an evaporation leak. Light and message still still on (for days of driving). The wind and sun of Kittitas County are a tremendous natural resource for producing clean, renewable energy. net newbie here, so forgive me if this has been discussed before. Some of these issues are serious, others are not so serious. Cap was tight. At first, I retightened my gas cap and the CEL disappeared after a few days. Check engine light comes on when gas cap is loose or completely missing, spark plugs or plug wires are damaged, vehicle has a bad catalytic converter, oxygen sensor needs to be replaced. If it is the gas cap, should the light turn off immediately after fixing it?. I've done the same thing on at least 3 occasions and trust me, the warning light will eventually turn off. Any suggestions on where to start or what to look for?. My check gas cap light came on the way home from the dealer. it's the arrow that. I don't have a check fuel cap light but I've left the fuel cap loose once or twice and the check engine light will come on just disconnect the battery for 15 minutes and it will reset the computer but you will have to have to reset your clock and your radio preset stations. If the gas cap looks okay and the light does not turn off, have a certified technician investigate the issue and determine the cause. Check engine light is the most common indicator light that appears on dashboard. Medical Hose Retractor. However, there are many different things that can cause a pilot light to repeatedly go out. Tractors and Parts. Nov 06, 2013 · Is it gas door or gas cap warning? I don't have a gas door sensor on my 06 SE so I would have to look at the car config files again to see if it is an option. Next, try tightening your gas cap. I cleared the code but the check message immediately returned. The OBD II Check Engine light will remain on as long as a fault persists. Normally, the service engine soon light will stay on until the engine is cranked, then turn itself off if no malfunctions are present. The primary reason that the check engine light illuminates in a Dodge Ram truck is a loose gas cap. it's the arrow that. Water in gas will stall a car's engine because it disrupts the combustion process. The girl said no but I could look through their box of left gas caps. Getting the "Tighten Gas Cap" message. Showcasing our large collection of thermostat 3 8 for sale right now. Loose fuel cap: Before you start looking through all sorts of vehicle components, first check out the gas cap. A blinking light indicates a more serious problem that needs immediate attention. Your gas gauge is almost reading empty and you know you need to fill up the tank. From there, if the light continues to stay on you should reduce your speed and unhook a trailer if towing. [Archive] Check engine light and the gas cap General Questions the malfunction indicator lamp (MIL) comes on. After fuel is added, the vehicle diagnostic system can determine if the fuel filler cap is possibly loose or improperly installed. A set of two small green light symbols indicate that the side lights or headlights are shining. I have a 2010 TRD Off-Road package all stock. Beep & Park - Rear Parking Sensor Kit with Display. The item went on to detail the gas gauge indicator tip, but with a caveat — when available, the arrow appears to only be a feature in relatively new cars, and the feature is apparently a courtesy, not a standard: Good news: The secret to the gas cap location has been on our dashboards all along. Nissan said to check my gas cap lol. Tighten the fuel cap. This doesn't kill the engine, however, and can be cleared up by giving a fuel treatment a few hours to work its chemical magic. I have driven it about 1500 miles so its practically new and this light has been on for the last 7-8 times i have been driving it. Remove and install the fuel-filler cap as soon as possible. what sometimes happens is that you'll get a check engine light if you forget to put the gas cap back on, or don't put it on tight enough, before. Either you did not replace the cap after filling the tank, or you did not give it the minimum 5 clicks needed to reseal the pressurized fuel system. My gas mileage declined and gas cap indicator came on in the dash display. My check engine light came on and I did the "key trick" to retrieve the code. The indicator light stops flashing after the ENGINE START STOP switch has been turned to ACCESSORY or IGNITION ON mode to indicate that the system has been canceled. Read and followed the manual and waited to see if it would go off, it didn't. Every now and then I get a warning for check engine or gas cap issuefunny thing. A check engine light can indicate a broad spectrum of problems with your 2009 Mazda CX-9. The label on my fuel cap indicates that I should tighten the fuel cap until it clicks otherwise the malfunction indicator lamp may come on. In stock and ready to ship. the gas cap last night. Happy to say after filling up with gas and driving 25 miles home that the light when off. Update on my gas cap light issue. To clear the confusion, we need a basic understanding of what the check engine light is trying to tell us. A chemical process indicator which changes from pink to light brown or darker upon exposure to steam is located on the top of the cap. Nov 22, 2019 · If a light comes on while you’re driving – and you can’t remember what it means – the color will help you determine its urgency. So at first I didn't think it was the gas cap because I thought it would have happened sooner. It has stayed on. Related fault codes:. i had a crack in a vacuum hose that made it keep coming on. Make sure that all warning lights are OFF after starting the engine. It may also cause the car to smell like gas. For all your Harley Davidson motorcycle parts, accessories, and gear, turn to our online motorcycle parts and accessories store. Jul 08, 2008 · Thank you ! 1000 Awesome Things. This light functions for both the parking brake and the foot brake systems. Lock or Engine Start Indicator. Details: Porsche has updated the radiator cap to a new version with the same part number. This video goes trough few things you should do before replacing the gas cap on your vehicle. I have had this damn check gas cap light haughting me for awhile now. 1-800-323-4340. This often solves the problem. When Shopping Partsam Speedometer Indicator LED Light Package Instrument Panel Gauge Cluster Dashboard LED Light Bulbs Compatible with Jeep Wrangler 1997-2006 -Blue for several products, think about using 1 Partsam Speedometer Indicator LED Light Package Instrument Panel Gauge Cluster Dashboard LED Light Bulbs Compatible with Jeep Wrangler 1997. If this indicator light comes on steady or blinks while the engine is running, it may indicate a potential emission control malfunction. Well bring it in to get serviced under contract. When your car's check engine light illuminates your dashboard, it's usually accompanied by a sinking feeling in the pit of your stomach. A trip to the dealer is not needed. I checked the gas cap, took it off, and made sure it was on tight. Gas Caps, V-8 and V-12 Gas Tank Cover (V-16) Lens Retainer Wire Clips for Head Light, Parking light, Tail Light Oil Level Indicator Plates. Yes, if you were to leave the gas cap off, or loose, this most likely would turn on the check engine light. Or, it could be a warning of a more serious problem that could damage your engine components. Dust Caps. Again can't get gas cap off, ask for help. Remove the protective sensor cap. Water in gas will stall a car's engine because it disrupts the combustion process. A malfunction light illuminates on the dash. We are a leading Yamaha Indicator Diversion Indicator discounter, find a wide Yamaha Indicator Diversion Indicator deals for sale from Ebay. I see here instructions for cleaning the gas cap. The vehicle dynamics control OFF indicator is on. Vehicle warning or indicator lights are not new but what these lamps are telling us has changed along with vehicle technology. A bad gas cap causes the “check engine” light to come on and does not hiss when unscrewed. If the check. To be safe, whenever you see a warning light on in your car, be sure to stop by the Honda Service Center so a certified Honda mechanic can take a closer look at the. And it came back. After a few weeks I went and purchased a new locking gas cap the Stanton 11508/or 10508 depending on which store you buy from. Mar 07, 2016 · In my experience, a MIL with no performance issues is usually evaporative emissions related. This is a follow up to a 6 Feb 06 post. 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. First visit to dealer they reset the sensor came back on within two miles. I put together a video discussing a problem my neighbor had with Nissan Maxima four door sedan after they filled the fuel tank. gas cap indicator problem 4. If the warning light illuminates, park your vehicle safely off the right-of-way, remove the fuel-filler cap and reinstall it correctly. Beep & Park - Rear Parking Sensor Kit with Display. Tighten it, then give it a day or 2 for the light to go off. This has happened twice in the year I have had my jk. As I was driving down the road a interior ding occurred and the prompt for gas cap was indicated. Check Fuel Cap Warning Light. Green Indicator, 12 V, 22mm Mounting Hole Size, Solder Tab Termination ShipSupport | Green Indicator, 12 V, 22mm Mounting Hole Size, Solder Tab Termination It appears that your browser has JavaScript disabled. I reset it again and went 30 miles. Is the gas cap on nice and tight? When I first got my car I didnt turn the cap to lock it so it was loose and the stupid engine light went off If thats the case then just tighten the cap and drive for a while. Gas Cap - Concern Level: 2 Photo by The Tire Zoo on Flickr / CC BY 2. CAPS LOCK stays lit and won't turn off, keyboard caps remain on. Gas Caps, V-8 and V-12 Gas Tank Cover (V-16) Lens Retainer Wire Clips for Head Light, Parking light, Tail Light Oil Level Indicator Plates. Selecta Products SL53413-6-BG 1/2 Inch 125 VAC Green Neon Raised Indicator Light. 2006 Caravan, right at 100,000 miles, started it up this morning and got a check engine light and "gascap" message in trip odometer. My dash warning to "check gas cap" came in this past week. 0 The second-most common cause for a false "check engine" light is also the easiest to resolve, but it's also one that is the most frequently overlooked. Got it checked via auto-zone, came out as a EVAP - gross leak or gas cap. I had the same problem once in the while,it would flash even with a half tank of fuel,turn it off and back on it goes away,So i kept thinking it was a loose gas cap,but it would come on another day,so the cheapest and simplest thing to do was buy a new gas cap and tether from mercedes abot 26 dollars,That was a few months ago,Light problem. As a leading manufacturer of closure caps, on-board vapor recovery components, and engine and transmission cooling components, Stant has cultivated its market-leading position by capitalizing on its wide-ranging experience and capability to provide its customers with innovative solutions for challenging applications. Common Causes of the Mazda Check Engine Light Turning On. • Malfunction indicator: If an engine-shaped cutout appears on your dashboard, your Altima’s gas cap may be loose or missing or there may be an issue with the emissions control system. If the cap is not properly tightened, the Malfunction Indicator Light ENGINE may illuminate. Detailed information on diagnosing and repairing a P0456 trouble code which refers to Evaporative Emissions System - Small leak detected. A check engine indicator is a malfunction-indicator light or MIL for the computer-management system. Reduce your speed and, if possible, the weight you're carrying. I also explain how the EVAP system works in simple terms so you can get a basic understanding of what. The check engine light and the slip indicator light came on when I started my truck Christmas day. If the "check engine" light is blinking or you notice any serious performance problems, such as a loss of power, reduce your speed and try to reduce the load on the engine. Sometimes it'll go off, and stay off for a while, then I'll get the dreaded 'tighten gas cap' light, and even if I do (even though there's no real way to 'tighten' the cap) the light will come on. 0 The second-most common cause for a false "check engine" light is also the easiest to resolve, but it's also one that is the most frequently overlooked. Some of these issues are serious, others are not so serious. Mar 11, 2015 · Honda Accord: Why is There a Gas Smell Coming from My Car? A gas leak is a serious safety hazard. I put together a video discussing a problem my neighbor had with Nissan Maxima four door sedan after they filled the fuel tank. Will this a. Check fuel filler cap warning This warning light indicates the fuel filler cap is not tight securely. durable & built to last. Your gas gauge is almost reading empty and you know you need to fill up the tank. gas cap indicator problem 4. How to reset enhanced accident response system Fiat 500. Remove the protective sensor cap. if the gas cap light comes back on, take it in and have a mechanic check the EVAP system (usually w/ a "smoke" machine to test for a leak). Nov 06, 2016 · 21st Century Fiat / Abarth 124 Spider the reason for the CEL could be something as simple as not tightening the gas cap It’s the Security Indicator Light. Add to cart. The check engine light should go off after you drive for several minutes if the light was caused by a loose gas cap. the gas cap last night. They turned off the light and it hasn't reappeared, two trips later. Everything seems to be running fine and you’re just enjoying a cruise. Nov 05, 2013 · Check Engine Lights – What Will Turn Them Off. If it is the gas cap, should the light turn off immediately after fixing it?. The more sophisticated vehicles become, the more systems they have that can potentially fail. What you should do: If your car isn't feeling jerky or strange when the check engine light comes on the first you should check is the gas cap. I see here instructions for cleaning the gas cap. This isn't the only reason though, the code or DTC P1456 is caused by a leak on the tank side of the evaporative system, and the most common cause is a loose or missing gas cap, but it could also mean a leak in the fuel tank, or one of the tubes or hoses. Light and message still still on (for days of driving). What does the Toyota TRAC OFF light mean? By Product Expert | Posted in Tips and tricks on Sunday, October 29th, 2017 at 3:09 pm. Gas cap replaced light went out. It appeared 6 months ago, changed the gas cap and was charged $120 for the cap and diagnostic check. I replaced the fuel cap and it was still on. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. 2006 Nissan Frontier. Do not exceed input rating stamped on appliance nameplate, or manufacturer recommended burner orifice pressure for. They suggested replacing the gas cap for $25. Note: These kits may be installed on models 1991 thru 1995 if the self-canceling turn signal feature is forfeited. 1-800-323-4340. 393691 LP GAS AND 394588 NATURAL GAS CONVERSION KITS 3 69-0244Š7 Fig. If the cap is loose, the check engine light should go off a day or two after it. An automobile's dashboard fuel level icon indicates which side the vehicle's gas cap is on. To most, it's thought of as little more than a plug which must be removed to allow the tank to be filled, then replaced. checked the codes but only the gas cap code came on. The Red indicator will light and the audible tone will sound for a short period of time and then the Green indicator. [Archive] Check engine light and the gas cap General Questions the malfunction indicator lamp (MIL) comes on. Since it has continued intermittently even with a new gas cap, I can't help but wonder if the problem lies elsewhere. Learn which problems can cause gasoline vapors to escape from your car's fuel tank and fuel system. I checked the cap and sure enough it was not on tightly. Something as simple as a loose gas cap is a common reason for these 4runners to act like the end of the world is near. Reduce your speed and, if possible, the weight you’re carrying. Usually the cause is a loose gas cap though, so check that first. When the clutch is "out", the display indicates the current gear, or a large "N" when the transmission is in the neutral position. Luckily I found it just before taking the truck to the dealer to have them look at it. FireBrick Termination Cap for Gas. turning the key on and off a few times will show you the codes on the odometer. According to the Honda Accord manual, a. The always pesky and always mysterious check engine light has turned on. Remove the syringe cap and attach a 15 cm length of tubing to the syringe. The dash light was still there. When the ignition switch is placed in the ON position, the light comes on when the parking brake is applied. When it comes to Panel Indicator Lights, Grainger's got your back. I rarely do that and it won't happen again! Will keep an eye on it though. Try simply removing the negative battery cable and put it back on. 0 The second-most common cause for a false “check engine” light is also the easiest to resolve, but it’s also one that is the most frequently overlooked. If that doesn't work you may need a new cap. it's the arrow that. One of my clients has a T410 with Windows 7 64-bit installed. After running a search on these boards, as well as a few others, I came to the conclusion that it must be a bad seal. If you have this VSC light illuminate on your Toyota, my recommendation would be to first get your computer scanned for codes. These lights can signal something serious or something as simple as a loose gas cap. Features fine adjustment With powerful on/off magnetic base Magnetic force 80kg/ 175LBS Universal mode which can be used for indicators with or without “lug” on backplate Accepts dial test indicators, digital indicators and normal indicators Technical No. Then Thursday the check engine light came on. Some vehicles have a separate indicator that warns of a loose gas cap before the condition sets off the "check engine" light. The light could be a minor issue, such as a faulty gas cap. If the problem is a loose or defective gas cap and you address that problem, the check engine light will turn off on its own usually in a couple of days. Retractable Electrical Receptacle. A "GASCAP" message will be displayed in the instrument cluster. If the seal is broken due to a loose or damaged gas cap, the vapor could be leaking into the fuel-tank system, which causes the check engine light to turn on. There is also an indicator that tells you on which side of the car the gas cap is. Do not try to tighten the seal by using vaseline or 3-in-1 as this could potentially make your issue worse. Anything that can increase emissions will trigger the check engine light to come on. To turn off the warning, perform the following: 1. This indicator light comes on after the ignition key is turned to the ON position and then it will go out. So, the next time you visit the gas station in a vehicle you've borrowed, rented or even carjacked, just look at the dashboard fuel gauge and you'll see a picture of a gas pump with an arrow. Jul 21, 2014 · Check Engine Light (MIL); Why You Cant Ignore It (Malfunction-Indicator-Lamp) Often a loose gas cap will fire off the light too and even if you tighten the gas cap it may take a while for. "Check engine" light was on, but now it's off. Usually the cause is a loose gas cap though, so check that first. I took the car to the dealer and he said it was a gas cap problem and put the original back on. Yup, it was the gas cap, and he reset the indicator and I thought all was well. gas cap light will not go off, how do i reset it? - fuel sensor failed, Took to the dealership and a new fuel pump was put on now the gas cap indicator is. Hopefully, this is the problem because it is the easiest, quickest, and cheapest fix! If the gas cap is tight and the check engine light is still on, move on to step 2. Then Thursday the check engine light came on. Luckily I found it just before taking the truck to the dealer to have them look at it. An idiot light, sometimes "tell-tale" or "warning light", is an indicator of malfunction of a system, indicated by a binary (on/off) illuminated light, symbol or text legend. I did a trick to do the diagnostic check myself.