There’s nearly always a straightforward explanation for why your check engine light has come on. Blinking check engine light is not good at all. Of course, the check engine and other warning lights are controlled by sensors that aren’t always reliable, and Kevin tells me his sometimes come on when the thermometer drops. Your Check Engine Light blinks or glows depending on what's wrong with your vehicle. If the check engine light comes on, here are some tips on what you should do: Look for a serious problem that requires immediate attention. If the automatic transmission shifts. The Check Engine light was still on, but the car sounded like it was running fine, and there was no performance problems. That helped and no light when driving around town for a couple for days, but the check engine light came back on when driving early on a cold morning on the highway. If it were misfiring I imagine I would really know it, VWVortex. If you need servicing on your vehicle or have a check engine light on, then come to any of our Moritz Kia locations to have your vehicle serviced with us. Since they don't, if the check engine. IT STARTED RIGHT UP LAST NIGHT AND FIRST THING THIS MORNING. If you are towing a trailer or a heavy load and the light comes on, you may be overloading the engine. This could make ABS light to come on. However, in the case of the Check Engine Light (CEL), there's no need to panic! The CEL is only telling you that the Engine Control Module (ECM) has detected a fault. My question is when I started the engine, not only was the check engine light on, but both the VSC Trac light and VSC Off light came on. it goes out. On the early 22RE engines ('85-'87), there are only "one-digit" codes, that is the entire code will be counted out in 1 - 13 flashes. When the engine misfires it often dumps fuel that is unburned in the exhaust system. Oxygen sensor needs. Engine misfires is a common cause of flashing check engine light. As you're driving, there aren't many things worse than seeing your "Check Engine" light come on your dashboard. You don't want to pay someone $$$ so that they can tell you that, do you? Do yourself a favor and get a scanner similar to the one mentioned above. HOME / Auto News / News / Top two reasons your check engine light is on – and how to fix it There are plenty of triggers for your vehicle's check engine light, but here are the top two you. For a few short moments your engine could become waterlogged, but since engines are hot and water evaporates, eventually your Check Engine light will shut off without incident. One final note: you may want to browse a complete list of the check engine light codes that might possibly show up when you check to see what your problem is. The fix would then be something severe and extremely costly like a catalytic converter(s) or engine replacement which cost on average $1,150 and upwards of $5,000 respectively to fix. Both the Check Engine Light and Service Engine Soon Light primarily monitor emissions so there is no need to panic. I have replaced everything that could be replaced but the lifter. The check engine light can be nerve-racking. Many times, P0300 occurs when there are worn out spark plugs, spark plug wires, or a faulty ignition coil. Steps to Take to Diagnose a Land Rover’s Check Engine Light Desert Oasis Auto Repair August 19, 2016 Land Rover You’re driving your Land Rover and everything seems fine until all of a sudden the “check engine” light comes on. CarComplaints. Most "check engine light" related problems don't require immediate attention (good news for the driver in this hypothetical situation!). There are literally thousands of things that can cause a check engine light to come on. Does that mean the second the check engine light comes on. when it comes to most modern cars, using cheap off-brand gasoline can also cause expensive problems -- the kind that can be chronic, and deadly for. He climbed into his red Tesla Model 3 and headed south along the fringes of the Florida Everglades. For more information on what OBD codes are, OBD-II codes explained, explanation of fuel trims, or answers to other questions, visit our FAQ area. Check your engine oil. An air filter is like a security guard for your engine. There’s nearly always a straightforward explanation for why your check engine light has come on. Let's take a look at the most common issues. 1994 was the last year that the diesel engine was still all mechanical. Any one else have a problem like this? Ive also noticed some rough shifting when in rush hour traffic. Injectors N30-N33 can also cause the EPC light to turn on and cause car to go into "limp mode" but also causes the engine not to run smoothly. Cold weather could cause more warning lights inside your vehicle. Malfunction Indicator Lamp/Check Engine Light If this indicator comes on while driving, there is a problem with your engine or its emission control systems. Check your dashboard gauges and lights for indications. Here in the United States,. My engine has always burned oil (maybe a quart every 2-3k miles) and I usually do add a quart when I see it getting low, between proper oil changes. Driving further could potentially cause expensive damage. A diagnostic tool will tell you which system is at fault, and then you can perform tests to find the exact problem. A faulty gas cap could cause the check engine light to come on but it would not cause a rough idle or engine noises. The only connections to the vehicle systems that the controller has is the power feed and the connection to the stoplight switch that tells the controller when the brake pedal is being pressed. One thing that won't trigger a check engine light: a recent oil change that was done correctly. Once again before condemning the sensors or actuators, check the wiring harnesses to them. The trouble codes will appear as flashes of the check engine lamp. Next time your check engine light comes on, pull the car over to the shoulder as soon as it is safe to do so. The only connections to the vehicle systems that the controller has is the power feed and the connection to the stoplight switch that tells the controller when the brake pedal is being pressed. Wondering what could cause the “Check Engine” light to come on? Contact our ASE Certified technicians at Dependable Car Care for more information about engine service and to schedule an appointment. Obviously I can’t fit on this page all of the reasons the failure indicator may come on. Driving on Hills When climbing hills, closely watch your temperature gauge. Your other option is to run the tank down and refuel with better gas. The check engine light generally comes on if there is a problem with the emissions system in the vehicle. When we set a diagnostic code the service engine light will remain on until the code is cleared. When you see the check engine light it doesn't necessarily mean you need to pull the car over to the side of the road and call a tow truck. The service engine soon light is often confused with the check engine light. Started up and now only the red triangle and check engine lights were on. How Cheap Gas Destroys Your Car's Engine. Another cause of engine misfire is the aged spark plug wires becoming weak and brittle. 0 L DOHC ztech engine. Blasting water into all parts of the engine while washing the vehicle with high pressure water can also cause the light to make an appearance. At our service centre, we have factory-trained technicians who can easily check and diagnose what’s behind your check engine light message, at a cost that is nearly always lower than a private garage. If you are towing a trailer or a heavy load and the light comes on, you may be overloading the engine. Check engine light comes on and off during time that the vehicle is stationary or while moving. I am running liquid moly to try and get it loose. As it stands now, the icon doesn't seem to be in the process of improvement and so owners should be aware of what some of the top causes are for it to come on. Nanaof4 July 5, 2016, 6:39pm #5. If the check engine light comes on, here are some tips on what you should do: Look for a serious problem that requires immediate attention. The check engine light pops on ! You're driving home from work one day when the car owner's worst nightmare happens: the check engine light pops on. Gas stations are all about price and volume, and cheap sells. Power steering warning light. Symptoms of a Bad Oxygen Sensor. CarComplaints. You can have it scanned for free at autozone and they will tell you the trouble code. The check engine light will NEVER come on telling you to do routine maintenance. It turns on and you have no idea why. Faulty fuel injector. Having the “check engine” light turn on can be an unsettling experience. OIL CHANGED. If an oxygen sensor is faulty, you could see a drop in fuel efficiency or poor engine performance. I have a 2011 Avalanche and the stabilitrak light is on and I am getting a check engine light with p0304 code. Typically an intermittent check engine light concern happens under very specific conditions such as when it's hot, cold, damp or driving over bumps. But before you start to panic, did the light turn on because the gas cap wasn't tightened all the way? Sometimes your vehicle will throw up a fault code because something as simple as the gas cap being loose could trigger the check engine light. OIL CHANGED. ABS Light. What Does The Check Engine Light Mean When Illuminated? When you see the check engine light illuminated in your dash, it means your Volvo has detected a problem within its OBD system. Swamps and. Press and hold the trip odometer reset button for approximately 10 seconds. When you see the check engine light illuminated in your dash, it means your Mercedes-Benz has detected a problem within its OBD system. Check your dashboard gauges and lights for indications of low oil pressure or overheating. If the brake controller was properly installed, it shouldn't be able to affect the vehicle in any way that would cause the Check Engine light to illuminate. In some ways the check engine light is the most obvious one to diagnose, as far as which part it's pointing to as a problem. Fuel injection systems supply fuel directly to the cylinders of a vehicle's engine. Don’t panic! A check engine light rarely signals anything disastrous. Now each time I pull away, the Acadia hesitates and it also makes the clucking noise. Started to be difficult to start. I decided to check battery votage, only 10 V after sitting all night and the interior light was also dim. Let's take a look at the most common issues. In some rare cases the engine light will come on, not because there is an issue with the engine, but a malfunction with the light itself. Excessive oxygen readings in the exhaust will set lean codes. Once water gets on the valve cover, it can potentially enter a spark plug well if the igniter O-rings are not in perfect condition. A faulty temperature sensor or coolant leak could be causing your system to log engine temperature codes. While we have you, why not check out some of the most exciting upcoming PC games, or if you’re in the mood to read about the absolute greatest titles of all-time, check out our list of the best. If your check engine light is on, there's a good chance it's for one of these 10 reasons. Could needing a oil change cause your check engine light to come on. 3 Reasons Why Your Volkswagen Check Engine Light Is On By Product Expert | Posted in Tips and Tricks, VW Service on Friday, July 14th, 2017 at 4:13 pm. When I arrived at the dealer and explained everything I mentioned above, the guy there thought that the dirty air filter was my problem all along. Flashing or blinking warning lights or check engine light indicators should be addressed as soon as possible. Now it comes on again. IT STARTED RIGHT UP LAST NIGHT AND FIRST THING THIS MORNING. This afternoon, while running errands, the Check Engine light had shut off and it seemed to be running just fine. An air filter is like a security guard for your engine. SOURCE: My check engine light came. Loose gas cap ; Problem with the MAF sensor or circuit; System running too lean or too rich. Since all of the other causes usually require major engine service, you should verify that the engine actually has low oil pressure (thus causing the oil light to come on and stay on). Fuel cap problems flip on the check-engine light 4. The oxygen sensor or O2 sensor could also be the cause for the check engine light. The check engine light pops on ! You're driving home from work one day when the car owner's worst nightmare happens: the check engine light pops on. There are a few issues that will cause the CEL to illuminate that can be fixed in your own driveway. " Amen, Kevin. This disrupts the air/fuel mixture inside the engine. Learn more about the 2016 Vehicle Health Index at AutoGuide. Driving further could potentially cause expensive damage. Hi there! Now I don't know what you mean when you said “"a coil like one then underneath…” but fuel additives can trigger the check engine light. There is excess water in your engine. A cracked, faulty or loose gas cap / fuel cap can cause your engine light to come on – mainly because the fuel system has a vapour leak. ) Make sure you drive long enough to fulfill a full drive cycle, then go get that test. If you have this VSC light illuminate on your Toyota, my recommendation would be to first get your computer scanned for codes. Common Causes of the Mazda Check Engine Light Turning On. A lean condition can cause a power loss or even possible engine damage. what could cause my check engine light to come on? it's a 2004 with 22,000 miles. Of course, low or no oil in the engine can also cause this symptom. Just wondering if it can cause the engine light to come on. Next steps: Stop the vehicle in a safe place, turn off the engine and contact us to report your breakdown. According to my smog check guy, John, YES. In general, five common malfunctions can cause the check engine light to come on, and some of them are simple to fix yourself. Some of these issues are serious, others are not so serious. Get the truck check by a pro to see why the light is on. I have had the Check Engine come on when the Alternator voltage goes higher then 14. If you do find that the gas cap wasn't tight, close it properly and if there are no other problems, the Check Engine light will reset by itself after a day or two of driving. Fuel Gauge Causing Check Engine Light to Turn On My fuel gauge is failing and the check engine light comes on intermittently when the gauge level drops. Started up and now only the red triangle and check engine lights were on. Dirty air filter could be causing the engine to starve for air and run lean and cause the engine light to come on. MOST COMMON REASONS YOUR CHECK ENGINE LIGHT TO COME ON This is a list for most popular reasons a check engine light to come on. I NEED TO GET THE OIL CHANGED, BUT HAVE NOT NOTICED ANY PROBLEMS OTHERWISE. CarComplaints. It turns on and you have no idea why. When I arrived at the dealer and explained everything I mentioned above, the guy there thought that the dirty air filter was my problem all along. Because of the reasons, even in electric power steering systems there is a separate warning light, and power steering issues will not light up the check engine light. A faulty MAF sensor could trigger the check engine light. If this was indeed the trigger, your check engine light should go off within 10 or 20 miles once you're back on the road. There is a reason Subaru installed the check engine light and it is in your best interest to pay attention to what its telling you. Meaning of check engine light in Nissan models. Thermostat. When the check engine light goes on, check under the hood for frayed wires that may need to be fixed right away. Before you begin your engine, you want to pri. - cr0 Aug 23 '16 at 13:42 The real answer lies in the check engine code. Replacing an oxygen sensor quickly is ideal. com goal it to help you find the best possible solution to your OBDII code problem. Have change the gear box sensor, Chang the cam shaft sensor yet the light could not go off,and my mechanic says its the Engine brain box that is responsible. If you're sure it is the gas cap light coming on, it usually just means you need to tighten the gas cap. What could cause the check engine light to come on, you ask? It could just be a loose gas cap. How does the weather play a role? Blame the Weather for the Tire Pressure Light Coming On | AccuWeather. It is a type of misfire that will cause catalytic convertor damage!!! Get the problem taken care of before you have to invest thousands on convertors. If your oil light comes on while you're driving, it means there has been a drop in the oil pressure in your engine. Technology is on its way to helping us figure out what's gone wrong when the check engine light comes on. Every so often the engine will start to run a bit rough for a bit and the check engine come on. Faulty fuel injector. 1 following. IT'S A 2004 WITH 22,000 MILES. A malfunction indicator lamp ( MIL ), or check engine light , is a tell-tale that a computerized engine-management system uses to indicate a malfunction. Gas cap issue can turn on check engine light. Of course, low or no oil in the engine can also cause this symptom. While the Mazda dealer will normally charge a pretty good amount just to read the code ($80 or higher), there are some car parts stores that will read it for. What are any problems that could/might be related to the ch. It's a simple process to clear the light and your stress. This driver is in the USA and is sure about the 87/89 octanes. Symptoms of a Bad Oxygen Sensor. When you have a bad oxygen sensor, your vehicle will run less efficiently, it can sometimes have a poor idle, erratic jerking at steady throttle, hard starting problems, cause the check engine light to come on, and will cause high fuel consumption. Why is my Volkswagen check engine light on? By Product Expert | Posted in FAQ, Service Center on Wednesday, March 16th, 2016 at 7:51 pm Causes and meaning of the VW check engine light. As you can see, if the check engine light is ignored it can cause a lot of problems for your vehicle and ultimately end up costing you more money. It could be anything from an EVAP leak to a transmission problem. Shut off the engine as soon as possible. Answer: On the newer GM vehicles that have the remote start function, if there is a check engine light related to the emissions system, or many other trouble code set in the computer system, it will disable the remote start feature. Again, continued driving may cause very expensive damage to your Subaru. She hit it rather hard and the check engine light came on. You wouldn’t drive far if your oil light came on because your engine could seize. I decided to replace the air filter and see if the check engine light would still come on. If your car is smoking or making a unusual noise and the check engine light is on, it may indicate engine trouble. In some ways the check engine light is the most obvious one to diagnose, as far as which part it's pointing to as a problem. Could be bad O2 sensor, could be loose gas cap, could be MAF. Transmission problems can cause the check engine light to come on as well, however it's not always as apparent as other components within the vehicle. 5 times higher than they should be. IT STARTED RIGHT UP LAST NIGHT AND FIRST THING THIS MORNING. Check Engine Lights : Myths And Facts. Be sure the ignition key is on, the engine off, and your foot off of the accelerator when reading the codes. Generally, there are a few more common issues that have lead to your engine light causing you stress; we at Citywide Towing would like to list those frequent problems. i have a simalr problem my light comes on when it is worm and makes the car jump around does any1 have a clue whats wrong?? thnkz. It can cause your engine to run lean, which could result in permanent, debilitating engine damage over the long haul. If a car has a check engine light on and has P0171 and P0174 codes stored, the most likely cause is a vacuum leak. and if your dealership is too far to drive to, any Autozone will pull the codes for free. Ford Check Engine Light Questions & Answers This page will list all the Check Engine Light questions and answers asked of us pertaining to Ford vehicles. Check your dashboard gauges and lights for indications of low oil pressure or overheating. What to Do When Your Check Engine Light Comes On. Monday comes around and now check engine light is gone but the noise is has gotten worst. What Could Cause the Check Engine Light to Come On – Excessive amounts may show that the engine was tampered with to be able to pass the test with faulty equipment. In addition to causing your check engine light to turn on, a bad O2 sensor will have a negative impact on fuel economy, spark plugs or your catalytic converter. Can a dirty air filter cause a Check Engine light on a Saturn L200 to go on? Reply 1: I have never seen that happen if you could go to a auto parts. Common reasons your Mazda Check Engine Light is on By Product Expert | Posted in Tips and Info on Wednesday, April 12th, 2017 at 3:30 pm. Because of the reasons, even in electric power steering systems there is a separate warning light, and power steering issues will not light up the check engine light. Engine codes 12, 32, and 55 extracted. Now each time I pull away, the Acadia hesitates and it also makes the clucking noise. Many argue that because the causes vary so widely, the check engine light ought to be changed so that automobile owners stop playing guessing games and know exactly what is wrong. The proper fix for your CEL is to read the codes using an OBD reader. 1 following. The check engine light will NEVER come on telling you to do routine maintenance. According study conducted by CarMD, five common malfunctions cause the check engine light to come on, and several of them are simple to fix yourself. ? im not sure the last time it had a oil change its running fine but for some reason my check engine light came on. Have you ever wondered what causes a car's check engine light to come on? Here, we list some of the most common mechanical and electrical problems that can trigger this important warning, and. Advertisement. If you need servicing on your vehicle or have a check engine light on, then come to any of our Moritz Kia locations to have your vehicle serviced with us. Everything will seem fine, except for the glowing check engine light on the dashboard. After many years, connectors can be a source of problems. Fuel cap problems flip on the check-engine light 4. Continued operation may cause serious engine damage. One final note: you may want to browse a complete list of the check engine light codes that might possibly show up when you check to see what your problem is. OBD-II (Check Engine Light) Trouble Codes. Having the “check engine” light turn on can be an unsettling experience. There are literally thousands of things that can cause a check engine light to come on. Although it’s okay to keep driving for a few more miles, the smart thing to do is get your car into your auto shop as soon as possible. When the computer senses it the "check engine" light will come on. My mechanic told me that it could very well be that the cold temperatures may be causing the gas cap seals to be stiff and not seat properly on the end of the filler tube. Old or mismanaged gas stations can sometimes get too much water condensation inside their fuel reserve tanks, this fuel is then pumped into your vehicle and in some cases will cause a check engine light to come on and perhaps cause misfires and damage to the catalytic converter from too many contaminants in the fuel or too much water. You can get that for free at most auto-parts stores. There are literally thousands of things that can cause a check engine light to come on. If the ABS light comes on when you turn on the ignition, goes out when the engine starts, and then comes back on before the car is moving the cause could be a bad module, a bad ABS unit, or a wiring fault. Let's take a look at the most common issues. For example, if you just refueled, the problem could be something as simple as a loose or broken gas cap, a quick and safe fix. Even if the gas cap is on tightly, it may still be the cause of the problem if the seal is damaged or the cap is otherwise faulty. Check engine light is the most common indicator light that appears on dashboard. Low engine oil is actually a rare cause of an oil light coming on. Problem 1) When I put on the brakes, my oil light comes on and my oil needle drops all the way down like I don't have any oil (but I do have oil). This misfire can also cause the oxygen senor to over compensate (due to the miss) and go haywire which sets an oxygen sensor failure code AND the original engine misfire code. On-board diagnostic codes can be used to discover the issue with the engine. Safe to drive: No, if the battery light shows red while driving, you need to have the fault looked at immediately as the battery isn't being charged. You most likily do need new plug & wire set, a fuel filter would be a good. A check engine light is designed to turn on whenever any problem - and we mean ANY problem - with an engine is detected. Continued operation may cause serious engine damage. Faulty fuel injector. Driving further could potentially cause expensive damage. If I turn the engine off and back on again, the light will go out for a few minutes and then come back on again. Could the Fuel Filter being clogged on my 1998 jetta cause the check engine light to come on? I posted yesterday about the engine not reving past 2500 RPMs, a few of you suggested it is the fuel system, but I forgot to mention the check engine light being on, could the fuel filter being clogged make this happen. It’s not cause’ the turbos don’t last…it’s cause’ replacing the turbo is just a band aid…the real problem lies somewhere else. I have had the Check Engine come on when the Alternator voltage goes higher then 14. Unfortunately, the light itself doesn't tell the driver what the problem is — it could be anything from a loose cap on the gas tank to a problem with the catalytic converter. If you do find that the gas cap wasn't tight, close it properly and if there are no other problems, the Check Engine light will reset by itself after a day or two of driving. There are many reasons why the light will show but a garage can check what the cause is. One common cause of a check engine marker light-up is spark plug wires gone bad. If it is a rich running condition, then that could cause excessive fuel consumption. When a malfunction is detected, the check engine light (CEL) will come on in the dashboard to let the driver know a problem has been detected. The often misunderstood check engine light or "service engine soon" message can mean many different things. 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. Our auto shop proudly serves residents in the community of Ventura, CA, and surrounding area. A malfunction indicator lamp ( MIL ), or check engine light , is a tell-tale that a computerized engine-management system uses to indicate a malfunction. Toyota Check Engine Light Answers. 4 volts and lower then 12. It comes without warning and with no explanation. The possible reasons for this light are in the thousands. This should be done to ensure there is. A check engine light can indicate a broad spectrum of problems with your 1999 Ford Ranger. If a car has a check engine light on and has P0171 and P0174 codes stored, the most likely cause is a vacuum leak. Before you begin your engine, you want to pri. It may be necessary to connect up LED's (light emitting diodes) at various points in the circuit, so when the fault occurs, you can spot it immediately. com : Car complaints, car problems and defect information. Cracked and loose hoses. Had local Toyota dealer check computer history and no fault codes present. And your recommendation is ?????. check engine light every 1 is talkin about this problem with the egian light its funny how people it happens to. LIGHT CAME…. Once again before condemning the sensors or actuators, check the wiring harnesses to them. It keeps the undesirables (dirt and debris) out while letting power-producing air in. I have a 2011 Avalanche and the stabilitrak light is on and I am getting a check engine light with p0304 code. Since the check engine light is on the computer needs to be scanned for codes. If the dipstick is not in tight it may cause the car to idle funny. Problem 1) When I put on the brakes, my oil light comes on and my oil needle drops all the way down like I don't have any oil (but I do have oil). 1994 was the last year that the diesel engine was still all mechanical. Ford Check Engine Light Questions & Answers This page will list all the Check Engine Light questions and answers asked of us pertaining to Ford vehicles. I regret to confirm that 40 years of car engine fun suggests to me that a flashing Oil Pressure light usually means real trouble. A loose fuel cap can sometimes cause the check engine light to turn on. A solid check engine light can be something harmless, or something serious. LIGHT CAME…. Since then, the Check Engine light has come one and gone off again more than once, and I've noticed that when the temperature is mild, it goes off. Chevrolet has many documented blogs of these timing chains being bad but still used them in their builds. Another cause of engine misfire is the aged spark plug wires becoming weak and brittle. Ford Expedition lean codes could caused by a leaky PCV hose. I've had this done at NAPA and Advance Auto Parts. To determine that this was the cause of the CEL coming on, you might remove the spark igniters and spark plugs and inspect for corrosion. The Toyota VSC light comes on when there is a malfunction with this VSC system. The only thing I'd add is before you put yourself in a situation where an engine failure could leave you stranded or perhaps cause an accident if the engine fails at speed, you ought to do a few things to determine the extend to which your engine may have been damaged from low oil pressure, if that's what it was. now my check engine light is one and when i went to get the code checked it truned on my engine and i coulnt turn it off. Obviously I can’t fit on this page all of the reasons the failure indicator may come on. A federal government mandated on-board diagnostics (OBD) for all passenger cars sold in the United States, a check engine light is different than "service required" light which simply means it's time for an oil change or air filter check. Started to be difficult to start. It is the light that we shouldn't ignore. most common causes - gas cap & oxygen sensor The two most common reasons for a check engine light to illuminate is a loose fuel cap or a problem with an oxygen sensor. Monday comes around and now check engine light is gone but the noise is has gotten worst. Please don't read that as an excuse to procrastinate! Driving in spite of a check engine light for days or weeks (or months) could cause serious damage. Even if the malfunction was an intermittent problem the light stays on. The Check Engine light will also come on if your mass airflow sensor fails This can happen if your air filter has not been replaced on a regular basis. This driver is in the USA and is sure about the 87/89 octanes. Reset the check engine light (IANAL, but resetting the light is not tampering; intentionally disabling it is. Check engine warning light. There could also be a problem with other sensors or components that it communicates with as well. And your recommendation is ?????. Started to be difficult to start. Re: will 'bad' gas cause check engine light to go on? THis is my question as well. The check engine light came on and at the same time the engine was shaking a little. In addition to causing your check engine light to turn on, a bad O2 sensor will have a negative impact on fuel economy, spark plugs or your catalytic converter. The often misunderstood check engine light or "service engine soon" message can mean many different things. The first step in the diagnosis is an oil level check. Meaning of check engine light in Nissan models. Receive helpful tips and a free copy of my popular auto-repair ebook, A Mechanic Comes Clean. Since then, the Check Engine light has come one and gone off again more than once, and I've noticed that when the temperature is mild, it goes off. Fuel injection systems supply fuel directly to the cylinders of a vehicle's engine. Figured at least I wasn't gonna burn up the engine. Since the light comes on at low engine speeds. The mass airflow sensor, or MAF sensor, calculates the amount of air that's coming into the engine so that the computer can add the right amount of fuel. Old spark plugs, dirty throttle body, bad ignition wires all can cause engine problems with the Check Engine light coming on. Symptoms of a Bad Oxygen Sensor. If you need servicing on your vehicle or have a check engine light on, then come to any of our Moritz Kia locations to have your vehicle serviced with us. You can get that for free at most auto-parts stores. I've tried using mid-grade gas, in the 89 octane range and noticed no problems with performance, but have on oacasion had problems with the check engine light, and codes relating to fuel mixture. The Check Engine light was still on, but the car sounded like it was running fine, and there was no performance problems. Symbol Meaning Temperature warning. Unless the oil level is low enough to cause a drop in engine oil pressure, the oil light will not even come on. You can have it scanned for free at autozone and they will tell you the trouble code. I have a 2011 Avalanche and the stabilitrak light is on and I am getting a check engine light with p0304 code. Check your dashboard gauges and lights for indications of low oil pressure or overheating. I thought maybe it was bad gas but since the lights been on ive filled my tank all the way up and nowits at half a tank and the lights still on. Average repair cost is $650 at 60,650 miles. I drove my car to georgia and the same thing happened while i was on the road and had to have it fixed there. It was desgined to come on to report some sort of issue that will cause the emissions to increase to at least 1. Generally, there are a few more common issues that have lead to your engine light causing you stress; we at Citywide Towing would like to list those frequent problems.