How To Turn Off Check Engine Light To Pass Emissions







The check engine light is part of a system that constantly monitors diagnostics relating to emissions, engine efficiency and fuel efficiency, among other things. For example, if the gas cap is not properly tightened, the light. Use the fuse panel diagram on the inside cover to determine the location of each individual fuse. Lowering emissions of all four chemicals requires a near-perfect tune and lots of specialized equipment to recirculate exhaust gas, inject clean air into catalytic converters to speed light-off. com send anonymous email free. I also assume it will pass, but you never know HOW it will pass. The check engine light is part of the on board emissions system in your Subaru that helps to monitor many different functions of your Subaru while you are driving. 2000 Honda Civic passed emissions test but failed MIL/Check Engine light [ 2 Answers ] My 2000 Honda Civic EX had a smog test and it passed the emissions but failed the engine computer test, so they say. You can try the following methods below to reset your check engine light. The smog folks are on to this technique already. 1996 and newer vehicles CANNOT PASS emissions testing with the "Check Engine" light illuminated. “Some people have tried in the past to turn the check engine light off or have it reset and then go get their test before it comes on again,” he said. If the check engine light is still on after three days, your problem may not have been fixed or you may need to try some of the methods below to reset it. Then, in most cases, when you drive your vehicle the check engine light will go out by itself. New 60 Floor Light Check Weigher Stag Control System X New 60 Scale Weight 60 Stag X New Check Control Weigher Floor Light 60 60 Scale System Weight Nwt 6275 Brioni Light Brown And Pink Check 100 Cashmere Sport Coat 42 R - $1,695. If you then did a bunch of highway driving before changing the oil, the specs may have dropped back into the normal range, causing the light to go off. Unlike the overheat or charging system red warning lights that require an immediate shutdown of the engine, this one is advisory and is yellow or orange. Hydrocarbons. “Some people have tried in the past to turn the check engine light off or have it reset and then go get their test before it comes on again,” he said. I've replaced them before, check engine turns off for about 3 weeks (and i pass emissions) and then it comes back on. Pulling the battery should clear the code too. The Check Engine light comes on as a result of the Crown Victoria's computer, called an ECU, generating a trouble code. Some trucks even been known to set DTC’s (Diagnostic Trouble Codes) and trip the SES (Service Engine Soon) light in factory stock condition. A number of things can cause the check engine light to turn on. However, there are times when an engine fails this test. Clearing the codes will turn off any check engine lights (aka: SEL, CEL, SES, etc. In order for your car to pass the smog check, you need to do a drive cycle to get the OBC ready. High HC - fuel mixture too rich - check O2 sensors, smog pump, and cats. As long as the car passes an emissions test, it should be fine. The emission control system, called OBD II (on-board diagnostics. How To Erase Check/Service Engine Light, To Pass Inspection & Get Tags (Scan Begins at 2:28)Must See How Car Dealerships Rip You Off (The Truth How to Clear Check Engine Light and Pass. CHAPTER ONE. Anyways, I unplug the battery, and sure enough the "check engine" light goes away. These emissions devices operate at high temperatures to cut emissions but can pose a fire hazard if faulty. If you don't know how to check the codes from the computer and how to repair your car on your own, bring your car to a professional mechanic and have it fixed. Step 1 - Disconnect the battery. Review the emission readiness status of OBD monitors. Once i clear the code and turn on the ignition on it comes on. ) They gave me my check back, told me to get it fixed and gave me a new deadline. If the OBD system scans the component three consecutive times or more, and no longer detects the problem, the light will turn off automatically. If the check engine light is still on after three days, your problem may not have been fixed or you may need to try some of the methods below to reset it. A check engine light/malfunction indicator lamp that is illuminated will automatically cause you to fail the smog test. you would think the diagnostics are being performed enough to make that light come on. There is a table of OBDII codes at the end of this page to reference. If check engine light is on, it will not pass emission inspection/smog test. Restart the engine and watch the indicator light. Our Free Check Engine Light Code Retrieval Service provides you with quick and accurate answers from a professional Pep Boys technician. If this particular warning light is on you will need to the get the vehicle inspected and repaired before taking it in for a smog test. However, there are times when an engine fails this test. A few driving trips with the cap properly installed should turn the light off. I was told I need to replace an O2 sensor. I took the car to the dealer, and they said the codes were 300 and 302, which mean misfiring cylinders. The inspector answers these two bulb check questions as either a PASS or FAIL. In order for your car to pass the smog check, you need to do a drive cycle to get the OBC ready. Accelerate 0-50 MPH. There’s a manufacturer prescribed test cycle of idling, driving, and such, but normal street driving is usually enough to tick off all the boxes. Determining what has caused the "Check Engine" light to illuminate, and repairing the problem is a job for trained professionals equipped with the proper tools to diagnose and repair the problem. Emission Time welcomes guest blogger Tim Miller, an avid car mechanic and founder of Obdadvisor. safely pull off the road and turn off the engine. How to turn off the check engine light in order to pass the Vehicle Emissions test. The Check Engine Light must be off. Clearing the codes will turn off any check engine lights (aka: SEL, CEL, SES, etc. For OBD II vehicles, the vehicle computer monitors a number of emissions related factors and reports any variations from the “standards”. Most onboard computers will recheck whatever problem caused the check engine light to activate multiple times. You can try the following methods below to reset your check engine light. If the check engine light is illuminated, it will fail emission inspection. The mechanic will read the codes using a scanner, interpret the codes, and provide a diagnosis. A couple of months ago, the check-engine light came on. My emissions system light is on what do i do to get it to turn off - Answered by a verified Lincoln Mechanic We use cookies to give you the best possible experience on our website. And simplest way of clearing the check engine light on 2008 Toyota Prius is time and driving. This article explains the various ways of resetting and/or clearing codes on your 6thgens. While this might turn off the light temporarily, it'll come on again if a malfunction triggers it again. If the light was recently reset with an OBD2 scanner or by disconnecting the battery, you need to drive the car for a couple of days for the systems to be ready for testing. If you get someone to turn off the engine management light- especially if its actually come on due to emissions- then it will stay off for a while until the fault re-occurs. Step 1: Clear the Check Engine Light if it is on. What if the Light Stays On? If the light stays on, you need to have the problem diagnosed and fixed or you may damage expensive engine or exhaust components. Sometimes it is not caused by a serious problem with your car. Unfortunately, disconnecting check engine lights is against the law, because it's considered tampering with the factory emission control system. That was a while back, though. Some trucks even been known to set DTC’s (Diagnostic Trouble Codes) and trip the SES (Service Engine Soon) light in factory stock condition. First of all, if you cleared the code by disconnecting the battery and there is a hard failure in the engine control or emissions system then the light will just pop right back on. Continue driving and see if the check engine light turns off. It should also work for any of the current generation Nissan and Infiniti vehicles. Chevrolet Silverado 2014-Present: How to Reset Service Light The service engine light will sometimes trigger whenever the computer detects a change in your truck. How Car Dealerships Rip You Off (The Truth) - Duration: 11:17. Do not shut off the engine while waiting for your turn on the test machine. Appropriate repairs are made, and the DTC trouble codes are erased. I can trigger a check engine light scan code and it will come on. Regardless, it's easy to find out what the issue is, and taking care of it quickly can save you money, and prevent further damage down to the road. Refill your gas tank again. When the computer senses it the "check engine" light will come 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. A couple of months ago, the check-engine light came on. If you don't know what the problem is, an emissions repair shop can run a diagnostics test and fix the problem for you. So I went to get smogged, they said my check engine light doesn't work. Turn the vehicle off, wait at least 10 seconds, and restart the engine. If the check engine. Put fluid back in an the light went out for a good while,that was last year so it passed inspection. “Some people have tried in the past to turn the check engine light off or have it reset and then go get their test before it comes on again,” he said. The Check Engine light on your Ford Crown Victoria indicates a problem with your vehicle's emissions control system. So to review you do have a few options for resetting your check engine light, but the easiest way is to use an auto scan tool. Simply "resetting" the Check Engine light will not get you past the emissions test. You want to receive your repaired vehicle with the check engine light on, unless the technician had to disconnect the battery to make the repair. 44, enough for 4th in a session with 27 cars. It should also work for any of the current generation Nissan and Infiniti vehicles. Put the key into the ignition and turn on the car but don’t turn over the engine. Hydrocarbons. Trouble Codes Turn On Your Check Engine Light. Depending on the problem the check engine light could come back right away or could take up to two weeks to turn on. CHAPTER ONE. It's a simple process to clear the light and your stress. A service technician will turn off the dashboard "check-engine" light after most repairs. If the light has been turned off without making necessary emissions-related repairs, it will come back on and the vehicle will not pass the test. 5) when the maintenance required light goes out turn the ignition key OFF and then you can release the trip reset button. Reader Question I have a 1999 Nissan Maxima with 106,000 miles. This article explains the various ways of resetting and/or clearing codes on your 6thgens. If you fix the problem then the light will go off after a few days driving. Turn key off, then start car Engine light should be reset. A service technician will turn off the dashboard "check engine" light after most repairs. Toyota Camry: How to Reset Your ECU and Clear Check Engine Lights Let's take a look at how to clear that pesky "check engine" light, so you don't panic when driving down the highway. Here are a few things you can try to reset this light. How do you turn off the check engine light on a 1993 ford explorer without taking it to a shop Will it then pass smog? No, a 93 will need to go through the full smog test. Help me reset my car's computer in time for Saturday's emissions test January 29, 2015 5:01 AM Subscribe Of course my check-engine light comes on 4 days before the deadline to get my emissions tested. Check engine light on means do not pass go. The "Malfunction Indicator Lamp" (or MIL ) comes on to warn you when the Onboard Diagnostic System (OBD II) detects a problem that cold cause your vehicle's emissions to exceed 1. How To Erase Check/Service Engine Light, To Pass Inspection & Get Tags (Scan Begins at 2:28)Must See How Car Dealerships Rip You Off (The Truth How to Clear Check Engine Light and Pass. You might purchase a scan tool at your neighborhood car parts store. Turn the vehicle key to the ON position and select continue. Turn off your air conditioning, heater, radio, or other accessories before the inspection starts. While you’re waiting for the test at the testing station, keep your engine running. If it’s too fast/slow the ECU will sometimes stop responding to the ScanGauge’s requests for information, so the ScanGauge thinks the vehicle is no longer running and turns off to save power. Does anyone know of an easy way to disable the check-engine light for a bit? I have a vehicle that I'll be selling soon. WARNING! Beware of Offers to Turn the ''Check Engine'' Light Off Motorists should beware of offers to turn the ''Check Engine'' light off in an attempt to pass the on-board diagnostic (OBD) test without making repairs. Reconnect the battery lead. This article will show you how. Unfortunately, disconnecting check engine lights is against the law, because it’s considered tampering with the factory emission control system. If the problem had not been fixed, the Check Engine light would eventually come back on. I was told I need to replace an O2 sensor. The emissions are checked during an MOT so if there is an issue your car will fail its MOT. The NOx reduction potential in this case is determined by NOx-PM trade-off line of the particular engine. It barely seems like the blink of an eye, but it was 20 years ago that Honda ushered in the modern era of big-displacement street-going sportbikes with the CBR900RR. What you need to do is find out why it came on in the first place. The car felt great, even in greasy and wet conditions, and I punched in a 2:45. "Check Engine" lights became a standard equipment feature when automotive onboard computers proliferated in 1981. ? My vehicle emission test is due, however my check engine light is on. Most of drivers feel annoying when they see the Check Engine Light still turn of even the car problem was solve. The emission control system, called OBD II (on-board diagnostics. A flashing Check Engine Light indicates that your vehicle's engine is in serious trouble, whereas a steadily lit one means less urgent service is needed. Check the dipstick in the oil compartment of your engine to make sure it is inserted properly in the tube. I Do Love Weapons ( •́∇•̀)⌐╦╦═─ ( •́∇•̀)⌐╦╦═─ Copy Emoji. For OBD II vehicles, the vehicle computer monitors a number of emissions related factors and reports any variations from the “standards”. waiting, keep the engine running and, while in neutral or park, occasionally rev the engine for 15 seconds at a time. The Subaru check engine light comes on when there is a problem with the Subaru's emissions control system. Check your EGR system (if equipped), which recirculates exhaust gas to lower combustion chamber temperatures, and mainly lower NOX. My "check engine" light has been on for awhile and I'm sure its because of the EGR exhaust valve is clogged or somewthing, which affects your nitrogen emissions. So I went to get smogged, they said my check engine light doesn't work. e The results of the MIL CHECK step (see below) are shown on the Vehicle Inspection Report (VIR). Help me reset my car's computer in time for Saturday's emissions test January 29, 2015 5:01 AM Subscribe Of course my check-engine light comes on 4 days before the deadline to get my emissions tested. Small Engine Tune Ups Although not a utility vehicle, the Mazda3 Sport actually provides a bridge model between the small CX-3 and the larger CX-5. What you need to do is find out why it came on in the first place. If you have recently changed the battery on your BMW or done a major repair for the engine or emission system, the on board computer has mostly been reset. Hey guys I finally need to register my car on this side of the state and have never had to pass emissions so its a little new to meI do not have a check engine light or anything but my abs light is on because of a bad abs sensorwill I not pass even though it has nothing to do with emissions and doesn't pull up with a code reader because its not stored in the ecuanything thoughts on. pass emissions if the Check engine light comes on. But—and this is a big but—there's still an unresolved problem! In truth, there are two schools of thought about check engine lights. Drive with steady throttle between 45-50 MPH Shut off car. Not the last time I had it happen. If your car doesn't pass, it could mean costly repairs, late DMV registration fees, and all the stress that comes with unexpected expenses. Light snow was blowing in from the east on Thursday. In my opinion, it would be a bad idea to try and get the light turned off by disconnecting the battery without first getting the codes read out so you can get a handle on the specific problem. So the guy at AutoZone commented that while he could not "legally" turn off the light (it had to be reset by the dealer), he heard somewhere that if you disconnected your battery for a couple of minutes, that will turn off the check engine light. Engine codes 12, 32, and 55 extracted. Check Engine Light OBD-2 Codes since I pulled all my lights off and now don't need the Meso Cover. Unfortunately, there is no "universally" accepted way to safely turn off a check engine light. It is possible that it is, but you need to have it checked out immediately. There’s a manufacturer prescribed test cycle of idling, driving, and such, but normal street driving is usually enough to tick off all the boxes. The device will automatically detect and display any codes that may be present. First of all, if you cleared the code by disconnecting the battery and there is a hard failure in the engine control or emissions system then the light will just pop right back on. The car has over 110,000 miles on it but still runs great and has not needed any repairs. However, if you raise the entire front end you can rotate the front tires when the car is IG-OFF and in P. Then your car must go through a few cold start-up cycles, idle for so many minutes and run at highway speed for so many minutes. (one bad sensor could cause both codes) changing the sensors usually doesn't turn off the check engine light as the codes need to be cleared first followed by clearing the engine light. (2) The technician will connect the inspection tool to the OBD II system to determine its status. Two questions: 1. When conditions are correct, the test will again run and the light will come back on. About 6 months ago my Check Engine light went on and I got a diagnostic. So I went to get smogged, they said my check engine light doesn't work. Turn off your air conditioning, heater, radio, or other accessories before the inspection starts. If the check engine light is illuminated, it will fail emission inspection. A check engine light on a vehicle at least 12 years old may still pass if the I/M 240 test can be run and the car can pass the test. I did a little more research and found that if the check engine light goes on (for any reason) then cruise control and eyesight (and pretty much everything else) automatically turn off. Though the light is off, the DTC will stay in history. How To Avoid The Check Engine Light Scam: When you are looking to purchase a car always, always, always test drive it first, don't just take the sellers word that the car performs well. Yes, if you were to leave the gas cap off, or loose, this most likely would turn on the check engine light. Motorists should beware of offers to turn the "Check Engine" light off in an attempt to pass the OBD II test without making repairs. If you're trying to turn the light off in hopes of passing an emissions test, this method rarely works. Here's How to Pass the California Smog Check Taking your car in for a smog test can be nerve-wracking. com FREE DELIVERY possible on eligible purchases. Toyota Camry: How to Reset Your ECU and Clear Check Engine Lights Let's take a look at how to clear that pesky "check engine" light, so you don't panic when driving down the highway. The vehicle is emitting emissions which are higher than the Environmental Protection Agency mandates, and that is why the check engine light is on. • Retrieve generic (P0, P2, P3, and U0) & manufacturer specific (P1, P3, and U1) codes. Can your check engine light go off by itself and you pass emission test? No, the check engine light will not shut itself off. Registration > Inspections & Emissions > On-Board Diagnostics. If it stays on, have your car checked by the dealer as soon as possible. The check engine light often indicates a serious problem with the car, however, and the best way to turn it off is to fix the underlying issue. And simplest way of clearing the check engine light on 2008 Toyota Prius is time and driving. Motorists should beware of offers to turn the "Check Engine" light off in an attempt to pass the OBD test without making repairs. These emissions devices operate at high temperatures to cut emissions but can pose a fire hazard if faulty. Turn off check engine light? If you just need it off temporarily to pass an emissions test, you could disconnect the battery and then reconnect it. Light On Steady: An emission control system malfunction has been detected on the vehicle. why clearing your check engine light will NOT pass emissions - Duration: 8:54. You will need to reset your radio stations. Turn the vehicle off, wait at least 10 seconds, and restart the engine. Unfortunately, disconnecting check engine lights is against the law, because it’s considered tampering with the factory emission control system. The emissions are checked during an MOT so if there is an issue your car will fail its MOT. The check engine light is on for a reason, it's telling you the car is in need of attention. After a few driving trips, the light should turn off if no potential emission control system malfunction exists. Hydrocarbons. If by all means it still doesn’t turn off, then your engine may still have problems you need to check. Your vehicle's computer will let the inspection station know that its codes have been erased, and you'll just have to go back again. Does anyone know of an easy way to disable the check-engine light for a bit? I have a vehicle that I'll be selling soon. CHAPTER ONE. To put out the light: Insure the gas cap is tight (turn clockwise until it clicks). Continue driving and see if the check engine light turns off. If the check engine light remains on after three times, your problem might not have been amended or you might have to try out a few of the approaches below to reset it. my check light went off so i. There are generally specific standards a vehicle must pass to be cleared from the emissions test. The 2006 Jeep Commander has 5 problems reported for check engine light. Even if your check engine light is solid, rather than flashing, your vehicle is still releasing an irregular amount of emissions due to a problem, and should be serviced as soon as possible. Turn off your air conditioner. Once i clear the code and turn on the ignition on it comes on. Check our list of Licensed E-Check Repair Facilities and have your vehicle repaired before having it tested. Whenever a check engine light, or computer is reset these monitors will stay “not ready” until the required tests are completed. I cannot say for sure if the light being on will fail the emissions test because I don't know where you live, but usually the light has to be off to pass. To use CRC Guaranteed to Pass Emissions Test Formula: At your next fill up, pour the entire contents into your gas tank and then fill your gas tank. This resets the vehicle's emission system components to "not ready". Knowing if we should continue driving or stop right now is difficult. Got it turned off at the dealership while under warranty and it came back on the next day. Smog test: Vehicle failed the MIL/Check Engine Light due to failure to successfully complete all OBD self tests Showing 1-13 of 13 messages. Enough said as no precipitation was forecast for the day. How can I reset check engine light - Answered by a verified Porsche Mechanic We use cookies to give you the best possible experience on our website. The OBD test involves checks on a vehicle's OBD system for possible issues related to emissions, primarily aiming to find out whether the equipment for controlling emissions is working correctly. The scanner also retrieves any fault codes that may be present. Average repair cost is $830 at 72,800 miles. If it is a Mercedes Benz you can use the search function on Mercedes Medic to see if there is an article that will show you how to fix what is wrong. If you want to repair or modify your car’s performance, you need a scantool to communicate with the PCM. ) They gave me my check back, told me to get it fixed and gave me a new deadline. I Do Love Weapons ( •́∇•̀)⌐╦╦═─ ( •́∇•̀)⌐╦╦═─ Copy Emoji. You forgot to mention that you have to make a certain face throughout this procedure!. All you need to do is take the old one off. Dirty air filter. Alternatively, you can try to turn this warning light off, but is generally not recommended. This is one part of the emission system that can trigger a check engine light. Acura check engine light (CEL) turns on to let you that the engine control unit (ECU) has detected a problem. This article applies to the Chevrolet Camaro (2010-2015). This makes the car not ready for a smog check. You want to receive your repaired vehicle with the check engine light on, unless the technician had to disconnect the battery to make the repair. You will be able to read the definition of the code by scrolling and selecting the code being displayed. The check engine light will come back on again if the computer detects the same or a different problem within about 50 miles of driving. Lowering emissions of all four chemicals requires a near-perfect tune and lots of specialized equipment to recirculate exhaust gas, inject clean air into catalytic converters to speed light-off. I took the car to the dealer, and they said the codes were 300 and 302, which mean misfiring cylinders. Pay attention to the dashboard after the check engine light experience. So, it would be illegal to "turn the light" off without fixing the problem, now wouldn't it? And, other than removing the light bulb you can't do it in any event. Check engine light on means do not pass go. Check that good quality fuel is used. This article will show you how to reset that pesky CEL and find out if you really have a problem, or if it's just a faulty code. -Idle for 5 minutes. Be sure to take your car to the mechanic when the light turns on, and before taking it in for a test so you don't waste your time. Turn the vehicle key to the ON position and select continue. ) They gave me my check back, told me to get it fixed and gave me a new deadline. You can not pass a state emissions test by clearing the codes this way. The clerk at the checkout says that the store’s owner installed WiFi because a lot of folks in town have it anyway and no one yet has asked them to turn it off. Replaced gas cap and have done a few driving cycles as they advised but the check engine light is still on. Hey, the ONLY reason your car has a check engine light is to inform you of problems relating to exhaust emissions. Once we can get it scanned and get the codes we then need to address those codes and fix the vehicle. Normally the vent valve is open. Our user id is: skipwhite, and our store name is whiteperformance1. I should also note that tampering with emission control devices is against the law regardless of whether your State or Municipality performs periodic emissions checks or not. Help me reset my car's computer in time for Saturday's emissions test January 29, 2015 5:01 AM Subscribe Of course my check-engine light comes on 4 days before the deadline to get my emissions tested. How to pass vehicle emissions test guarantee 100% iShootAmmo. Driving your car will help it pass the emissions test by disconnecting the battery cables to clear the check-engine light. The engine computer is scanned, again, and any DTC trouble codes recorded. There’s a manufacturer prescribed test cycle of idling, driving, and such, but normal street driving is usually enough to tick off all the boxes. There are a number of component failures that turn on the check engine light. While turning off your Volkswagen's check engine light by disconnecting the battery (or using a trouble code scan tool) you will erase the Emission Monitors as well. pass emissions if the Check engine light comes on. Even if all emissions data is cleared from the computer when the battery is disconnected, the car's systems need to complete a series of tests called a "drive cycle" before it can pass testing; sometimes more than one drive cycle is needed. Small Engine Tune Ups Although not a utility vehicle, the Mazda3 Sport actually provides a bridge model between the small CX-3 and the larger CX-5. My emissions system light is on what do i do to get it to turn off - Answered by a verified Lincoln Mechanic We use cookies to give you the best possible experience on our website. Since I moved to Nashville three years ago, it has always happened to go off right around the time I have to go through emissions testing. There are a few codes not related to emissions that you will still pass with. I am at work so i thought ide go to the garage later to get it checked out, but about an hour ago ide ran out of cigarettes so i drove to the shop (sluggishly) and when i got there i turned my engine on and off about 3-4 times and the warning light went out. Check engine light on how can i turn it off for an emissions test and pass - Answered by a verified GM Mechanic We use cookies to give you the best possible experience on our website. The Drive Cycle and Emissions Readiness Monitors have, for the most part, stopped this unethical tactic. pass emissions if the Check engine light comes on. If your vehicle has recently had a dead battery or the battery has been disconnected, drive it for at least a week before testing. I would say that about 7% of the vehicles that have a check engine light are the result of a loose or inadequate gas cap. My 2003 tiburon's check engine light won't come back on for smog to show a fail for a CA claim. To disconnect the scan tool turn the ignition key to the off position and then disconnect the tool. before turning off the. The symptoms had begun innocently enough. Remember, whenever your Check Engine or Service Engine light is on, your vehicle is most likely not meeting Oregon’s emission standards and it will not pass DEQ. Reconnect the battery lead. Drove around town shopping afterwards, stopping and starting the car a couple times at stores and there was no Check Engine light, everything was fine. It is unlikely the driver will notice any symptoms with check engine light code P0442 other than a slight odor of fuel, decreased fuel economy, and the check engine light. you'll pass the emissions testing. It can drain the battery, trigger the check engine light, or even prevent the vehicle from starting. Commonly called dice which refers to the plural of die. I have tried to disconnect the battery and do the trick of turning the key on (5-7 times without turning the engine over) and letting the glow plug light go out. The vent valve is controlled by the engine computer (PCM). By the way the easiest way to turn off the check engine light would be to disconnect the battery for 30 seconds. I had to replace an O2 sensor on my previous car (The Crappy Daewoo Monster) because the light kept going off and on for several months and at the end it wouldn't turn off so I ended up failing the first time. If the light goes off, we assume things are okay. Turn off check engine light? If you just need it off temporarily to pass an emissions test, you could disconnect the battery and then reconnect it. Frothy oil results in a loss of vital oil pressure and can result in serious engine damage. While turning off your Volkswagen's check engine light by disconnecting the battery (or using a trouble code scan tool) you will erase the Emission Monitors as well. on top of that now the check engine light is on. Again, it might take a little while after tightening the dipstick before the light goes off. For example, if the gas cap is not properly tightened, the light. Was this as simple as forgetting to put the gas cap on tight? Can you fill us in?. If you fix the problem then the light will go off after a few days driving. There are a few ways to turn the reset the Check Engine Light: Wait it Out. Once the ECM sees that the problem is no longer occurring, such as a cylinder misfire or loose gas cap, it will clear the DTC and turn off the check engine light on its own. If you're trying to turn the light off in hopes of passing an emissions test, this method rarely works. The Check engine light will not come on after the drive cycle is complete. normally about a 100 miles or so, the code is still stored in the ECM. Is it common for the Check Engine light to pop on shortly after installing a new battery? I put a new Optima Red Top in friday night, and everything was fine. If you see your Check Engine light coming on from your dashboard, don't ignore it. 44, enough for 4th in a session with 27 cars. There are a few codes not related to emissions that you will still pass with. If your vehicle has recently had a dead battery or the battery has been disconnected, drive it for at least a week before testing. They told me to drive the car 30 to 40 miles so that the computer would reset. How To Avoid The Check Engine Light Scam: When you are looking to purchase a car always, always, always test drive it first, don't just take the sellers word that the car performs well. After the car is stopped and the engine is shut down, a chime sounds and a warning message is flashed across the Driver Information Center, advising the driver to check the back seat. High HC - fuel mixture too rich - check O2 sensors, smog pump, and cats. It should also work for any of the current generation Nissan and Infiniti vehicles.