A number of problems can cause your check engine light to come on, but some are more common than others. How to fix if the check engine light comes on? If the gas cap is either left off, damaged, or does not maintain a solid seal, it will create less pressure inside the fuel cell. If your car’s check engine light turns on, it can be tempting to ignore it, especially if you don’t notice other issues. It is essential for every individual who drives a car to know what to do if the check engine light comes on. What can be done to fix this? 5. Like any other filter, the catalytic converter can wear out or become clogged with too much debris to be effective. Usually, if this is the case, your oil light will also appear. The mass air flow sensor can trigger a “check engine” light for a variety of reasons. These listed Check engine sensor faults not only occur to Toyota but to all vehicles. He has worked on my 2001 911 turbo several times. Whatever the cause, failure to get your Chevy vehicle checked out when the check engine light goes on could lead to further damage meaning costlier and more invasive repairs. Whether that is a continuous monitor like misfires, or engine timing, or non continues monitor like the catalyst or the EVAP system, or air fuel ratio. Rancho Cucamonga, Ontario, Fontana and Inland Empire drivers should stop by Mercedes-Benz of Ontario to have a Mercedes-Benz Master-Certified technician diagnose your vehicle and have your gas cap check engine light … Why my check engine light comes on? Most common reasons for check engine light in Toyota cars indicated about something went wrong in to the engine, sensors signal to the onboard system to inform the driver via engine check light. The sinking feeling that you get can be scary. This is one of those situations that should be taken very seriously, as an engine not receiving the proper lubrication can overheat quickly and cause internal engine damage. I'm a former auto mechanic from the 1970's and I can say that I'm very pleased with the service Nazareth provided. We worked on a Ford truck once that triggered the Check Engine light every time it rained. Once the code is suspected, you can locate the part and finally remove and replace it. Still, anytime a CEL illuminates on your dashboard, it is something that should be taken seriously. When this happens, it will create an error code and trigger the CEL. If the gas cap is damaged or not sealed properly, the chances are that you end up losing fuel through evaporation. Your engine needs oil to keep all those moving parts cool as it revs up. A faulty fuel cap can cause a check engine light A loose, cracked, or broken fuel cap will cause contaminants to enter the system or fuel vapours to leak out. This is one of those problems that should be inspected by a professional mechanic first. A check engine light is a malfunction indicator lamp and consists of a computerized engine-management system. In reality, most check engine lights are triggered due to fuel or emissions system issues. The transmissions currently in use are very different to diagnose and repair than transmissions from decades ago.... Hey there, thanks for writing in about your 2005 Chevrolet Avalanche. There are several reasons why the check engine light comes on. That means everyone is happy and that is ideally what we want to have going on. Every car has a catalytic converter that transforms/converts the carbon monoxide into carbon dioxide. 4 Common Reasons the Check Engine Light Comes On There are many, many reasons that the check engine light may come on in you car, truck or SUV. Using transmission error codes is a necessary procedure for a transmission technician since automatic transmissions have been computer controlled for over 20 years. P0873 OBD-II Trouble Code: Transmission Fluid Pressure Sensor/Switch C Circuit High, P0503 OBD-II Trouble Code: Vehicle Speed Sensor Intermittent/Erratic/High, P0302 OBD-II Trouble Code: Cylinder 2 Misfire Detected, P0649 OBD-II Trouble Code: Speed Control Lamp Control Circuit, P0121 OBD-II Trouble Code: TPS "A" Circuit Range Performance Problem, P2134 OBD-II Trouble Code: Throttle/Pedal Position Sensor/Switch F Circuit Intermittent, Poor gas mileage accompanied by rotten egg smell, Little acceleration when pressing on gas pedal, Hesitating, misfiring, or stalling engine, Hesitating engine with a heavy load and/or during acceleration. The check-engine light may come on if the purge solenoid can't close. When the electrical harness is loose, frayed, damaged, or exposed, it can send a signal to the ECU and mimic a mechanical problem. Marvelous job done by Mazyar on my car. Save my name, email, and website in this browser for the next time I comment. The gas cap seals the fuel system ensuring proper pressure is maintained in the gas tank. Let’s take a look at the most common issues. The question that comes to mind is that is it safe to drive the car with the check engine light on? People often end up panicking. If the MAF is damaged, the MAF sensor will send a signal to the ECU to let you know this needs to be replaced or cleaned. Please see our, Mitsubishi Galant - Oil Change - Snellville, Georgia. How much gasoline can i carry in my truck. Even if the light is only on a short time, a code will be stored in the ECU for later retrieval. Great communication skills as well . Routine service and maintenance are critical for your vehicle to operate correctly and efficiently. These filters keep the fuel and air entering your engine clean, which allows your motor to burn gasoline properly. Fast, free online quotes for your car repair. I will trust him with all my required repairs and services. The problem is that the issues can range from minor annoyances to those requiring immediate repair. This tends to happen quicker with fuel and exhaust system sensors, which are exposed to hot gases and carbon deposits. For example, sometimes, due to a lot of stop-and-go driving, the check engine light comes on. But its reason enough to light up the check engine light. Is it safe to drive the car with the check engine light on? Here are a few steps to fix the check engine light: In the end, do not forget to erase the code from the OBD reader. To properly identify your issue, consult your mechanic or consider purchasing an ODB-II code reader. The reason why the check engine light comes ‘on’ is because the car has failed some type of test. He will even show you what he is doing and how. When it's loose or cracked, fuel vapors leak out and can throw the whole fuel system off. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Hand-picked, community-rated professionals, Our mechanics make house calls in over 2,000 cities, Explore nationwide job opportunities for automotive technicians, Trusted mechanics, rated by thousands of happy car owners, Fleet maintenance with certified mobile mechanics, The statements expressed above are only for informational purposes and should be independently verified. He is very knowledgeable and wiling to take the time to explain things in detail with no jargon. P0121 code definition Throttle Pedal Position Sensor/Switch (TPS) A Circuit Range Performance Problem What the P0121 code means P0121 is a generic... P0493 means there's a voltage problem with the electric cooling fan control system due to a faulty fan motor, fan relay, wiring, fan fuse, or sensor. Once the fuel is ignited, it transfers the spark to the plugs through a combustion chamber. The emissions system on your vehicle is highly complex. An EVAP thingy that needs replacing is the reason for 2.78% of check-engine repairs, and the cost has risen 2% in a year. If your gas cap isn’t on tightly or appears chipped or cracked, this could be the reason your check engine light is on. When a car has as many miles as your has, the problems really start to stack up until it seems like everything happens at once. On top of not starting, other symptoms of a failing air flow sensor include: How to fix a mass air flow sensor issue? Anytime the check engine light is on your dashboard, it’s something to be taken seriously. While the O2 sensors monitor exhaust gases, the catalytic converter is designed to filter exhaust before it heads out the tailpipe. The 5 Most Common Causes Of A Check Engine Light. Today’s modern cars, trucks and SUV’s are very carefully monitored for fuel economy and emissions. He is awesome and you can tell he enjoys what he does. Depending on which sensor is damaged, the repair typically replaced the sensor. The check engine light will often start flashing and you can continue your drive without a problem. This sensor detects the amount of fuel required to run the engine economically. If your check engine light is on, there’s a good chance it’s for one of these 10 reasons. A malfunctioning sensor, low tire pressure, low transmission fluid and so much more will cause the light to come on. For people who are unaware of what is check engine light, you’ve landed in the right place. When you take your car to a mechanic, they will download these OBD-II codes to give them a starting point to diagnose the root issue and complete the right repairs. Below is a list of the top 10 reasons why your Chevy check engine light may come on. Does lowering a truck affect towing capacity? In most cars, it is easy for a mechanic or even the car's owner to attach the code reader to the appropriate port and get this information. He inspected the suspension while he was underneath the car and came to find out it was the stabilizer bar links. Other signs of a failing O2 sensor include: What’s the solution to this problem? Some signs that one of these filters is clogged are: How is this problem resolved? This could turn a minor repair into a major mechanical expense. Do not worry. This tells the sensor there is a damaged or loose gas cap and can cause acceleration problems and/or poor gas mileage. The emission control system contains an array of sensors that work to reduce the amount of pollution released into the air. The next step is to scan the codes as it will be displayed in the OBD reader. Low oil pressure is a common cause of a check engine light turning on, and it can seriously interfere with your car’s performance. This is the most common reason a check engine light comes on. There are a few different reasons behind it, but the most common reason is Ignition Misfire on one or several cylinders. To help you understand why immediate service is essential, here are a few common problems behind this warning. Secondly, try reducing the speed and load. Simply access the gas cap, remove it, and replace it. Check Your Gas Cap. Overall, the news isn't good for owners. It’s also common for sensors to wear out over an extended period of time. 2. Nazareth was prompt, friendly and efficient. While the top six reasons above can be easily resolved and diagnosed in most cases, this one is rather tricky. There are so many possible reasons for the check engine light to come on, so using a reader to retrieve the on-board diagnostic (OBD) codes can be helpful when the problem is not immediately evident. LEARN MORE. These will both have a noticeable impact on emissions, which usually triggers the engine light. Chuck did a good job! He offered a detailed explanation of my car's condition and additional repair items required. P2134 is an OBD-II generic code for the engine control module (ECM) detecting the throttle pedal position sensor F has an intermittent sensor return to the ECM What causes the P2134 code? This irritating warning can be dealt with simply by taking the gas cap off for 30 seconds, an then replacing it. This causes a reduction in gas mileage and increases emissions. When this happens, the oil pressure sensor will tell your ECU and illuminate the CEL. This shows me that he indeed cares about the customer and its vehicle and does not mind doing extra, as long as the customer is satisfied with his work and and all questions are answered. It also traces the amount of air entering the engine. He was friendly and does not mind if you watch him perform the job. If the gas cap is damaged or not sealed properly, the chances are that you end up losing fuel through evaporation. While it’s often assumed that the check engine light (CEL) is an indication of a major mechanical issue, this isn’t always the case. The ‘check engine’ light is the most common. The light also comes on if the oxygen sensors are not working correctly. There’s the check engine light is off. Oxygen Sensor. Check if your dashboard indicates any overheating issues or low oil pressure. The duo of spark plugs and wires are used to ignite the air-fuel mixture in the combustion chamber. Because of the number of potential causes, diagnosing a defective mass air flow sensor normally requires the services of an experienced mechanic. 5 Reasons Your Check Engine Light May be On 1 Failed Oxygen (O2) Sensors Your oxygen sensor measures the amount of unburned oxygen in your vehicle’s exhaust system. Your Dodge check engine light can come on for various reasons. Read on to find out the top 10 reasons the check engine light turns on, based on CarMD data. What happens if you exceed truck payload? Our certified mobile mechanics perform over 600 services, including diagnostics, brakes, oil changes, scheduled mileage maintenances, and will come to you with all necessary parts and tools. Your email address will not be published. It results in low fuel and performance. However, it’s important to visit an auto mechanic promptly to ensure the malfunction doesn’t compromise your safety. When one goes out, the others are usually not far behind. It can also be possible that this sensor is damaged and sending false data. Common causes of a flashing or blinking check engine light The check engine light is most likely to blink if there’s a severe constant problem, like an occurring ignition misfire, injector or a temperature sensor problem, that are an essential part of the engine’s running. 2. MAF sensor, & Failure of the catalytic converter are common reasons behind a check engine light indication. When this occurs, the ECU creates and stores an OBD-II diagnostic trouble code, which then illuminates the CEL. He showed up about 20 minutes earlier than scheduled on a Thanksgiving and completed the full service oil change within one hour. Made with ♥ in Silicon Valley. A faulty mass air flow sensor can prevent your engine from starting. While the potential reasons for your check engine light displaying might not sound too serious, any one of these could develop into a much more complex issue over time. If the catalytic converter fails, then it could be a possible chance that your check light will come on. He does an awesome job with every service request to my vehicle. This system sends out an indication if there is any malfunction. If the filters become dirty, your fuel system sensors will alert the ECU and illuminate the dreaded check engine light. YourMechanic All rights reserved. Reasons why your check engine light is on include: Loose Gas Cap This is the first item you should check. That kind of stuff. I will sure be using him for future services. What What the P2134 code means? When this happens, don’t wait or assume it will just go away. If the gas cap was loose but then later taken care of, then the light may be due to another issue. Well, there’s three basic states to the check engine light. In fact, according to many professional mechanics, a warning light can be caused by a minor electrical glitch. Misfire happens for different reasons, but those are not our focus point. If there are any lousy spark components, then the chances are that your check engine light can come on. It is considered best practice to replace all O2 sensors at the same time. Your email address will not be published. Shut off the engine immediately, and you will notice the lights going off. Hence, it is advisable to tighten or replace the gas cap as soon as possible. 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 check engine light is triggered when your vehicle's onboard computer or ECU detects an error coming from one of the multiple sensors on your car, truck, or SUV. Eduardo is always very professional and prompt! If the converter is not working correctly, it might lead to poor engine performance. The warning light for your engine is usually illuminated when prompted by the engine control unit (ECU) that manages the engine. If a check engine light has illuminated on your dashboard, the chances are it's one of these five things causing it. An oxygen sensor reads the air and fuel mixture and lights up … He had an earlier cancellation and called to offer an earlier appointment. The codes are some generic diagnostic codes and not model-specific. © Copyright 2020, howtruck.com All Rights Reserved. Sometimes, dirty oil, engine sludge, or a damaged oil pump can cause oil pressure to reduce or increase higher than it should. After refueling, do not forget to tighten your gas cap in place. For instance, a minor puncture in an air intake hose is hardly a good reason to pull over and call road assistance. Replacing a faulty oxygen sensor — a sensor used to optimize a vehicle’s fuel-to-air mixture to increase gas mileage and reduce emissions — is the most common cause for a check engine light. Besides having your engine oil and filter changed every 5,000 miles, replacing your air and fuel filters is nearly as important. Well, you can determine the answer to this question in 3 steps. Firstly, check your gas cap. But panic is not a solution. Believe it or not, the most common reason the CEL will light-up is due to a poor electrical connection from the ECU to the sensor. A broken or loose gas cap, Lousy spark plugs & wires, Oxygen sensors, Mass airflow or MAF sensor, & Failure of the catalytic converter are common reasons behind a check engine light indication. Will call on him anytime to work on my vehicles. Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Now that we’ve explained the why — let’s dig into the reasons the CEL can light-up, and the best ways to resolve these issues. Most of the time, replacing the gas cap can solve the problem. But if the light remains on after these two steps, it’s time to take it in. When the oxygen (O2) sensor fails, it can cause the engine to misfire, lead to poor acceleration, bad fuel economy, and more. But some reasons the check engine light comes on are much more common. The cap is a crucial part of a car’s fuel delivery system. Chevrolet Impala - Oil Change - Dallas, Texas. More signs of a failing catalytic converter are: How to fix this issue? 5 Reasons the Check Engine Light is On: The check engine light could illuminate for a number of reasons, the 5 most common being your: 1. Think a new car may be your ultimate answer? Get a fair & transparent quote instantly before booking. Oxygen sensor needs replacing. They can determine whether the light is caused by a damaged MAF sensor or it simply needs to be cleaned. This sensor tracks the amount of unburned oxygen in your car’s fuel system. If your car will crank over but not light-up, this is probably the source. A flashing check-engine light generally indicates that there is a failure in the emission control system. Follow these easy steps to resetting your check engine light, and you should be good as gold. Try to avoid speed surges and unload heavy equipment, if any, as soon as possible to turn off the check light. An O2 sensor failure will typically cause a vehicle to fail an emissions test in most US states. The engine light can be triggered by a number of issues of varying degrees of severity. If your car isn't feeling jerky, or surging when the check engine light comes on, the first thing you need to check is the gas cap. © You’re probably seeing a pattern here. Prevention is better than cure. If the sensor is not fixed, it might lead to the catalytic converter’s damage and produce potential sparks. Gas cap is loose: Tighten the gas cap. Simple – replace the air intake filter or fuel filter as recommended by your vehicle’s maintenance schedule. Other reasons include failure of the exhaust gas re-circulation valve, dead battery, vacuum leak, and much more. If you've lost it, replace it with a new one. In general, five common malfunctions can cause the check engine light to come on, and some of them are simple to fix yourself. Remind me later. The mass air flow sensor or MAF is responsible for carefully mixing the right ratio of air to fuel, maintaining a clean and efficient burn inside the combustion chamber of your engine. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. Immediately replace them. Porsche 911 - Oil Change - Douglasville, Georgia. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. He too will show you if he finds a problem with the vehicle so you can see for yourself. But in these scenarios, it is always recommendable to take your car to a mechanic and have him check your car’s oxygen sensor or replace the converter. Once you fix your part/condition, the check engine light will automatically shut itself off. A broken or loose gas cap, Lousy spark plugs & wires, Oxygen sensors. The oxygen sensors in a car can track the amount of unburned oxygen in the fuel system. High speed can heat the engine. Mazyars what can I say the consummate professional. Contact a professional mechanic and have them complete a check engine light inspection. It starts with a series of sensors that monitor the fuel/air ratio and the amount of carbon deposits coming from your exhaust. Broken, missing, or a loose gas cap are some of the most common reasons behind the check engine light. However, you’ll have to contact a professional mechanic to complete a check engine light inspection in order to remove the code and reset the warning light. The mass air flow sensor or MAF is responsible for carefully mixing the right ratio of air to fuel, maintaining a clean and efficient burn inside the combustion chamber of your engine. If the light turns off after that, then it is safe to drive. Very very satisfied. A loose fuel cap is one of the most common reasons why the check engine light turns on. Replace the catalytic converter. It converts harmful carbon monoxide into carbon dioxide. In such scenarios, put less demand on the converter, and the issue will get resolved. Required fields are marked *. After a lot of diagnosis, we found water that was dripping onto a spark plug wire, then running down the wire to the engine's head, causing an occasional short. A clogged catalytic converter can cause poor fuel mileage, engine misfiring, and even lead to internal engine damage if not replaced. Additional signs of a broken fuel cap include: What can be done to fix this problem? Even if the check engine light doesn’t come off after doing the necessary checks, visit your nearest automobile repair shop. Continuous flashing of the Check Engine Light refers to a serious problem of the engine that maybe needs you to turn the engine off as soon as possible. Even though there are many reasons as to why your car check engine light may turn on, the above 5 reasons are the main ones. I say this because he was only supposed to change the oil and filter but I told him about a noise I keep hearing in the suspension. A faulty one can increase emissions, cause the car to stall, and decrease fuel mileage. Nissan Altima - Oil Change - Tujunga, California. The gas caps are nothing but used to seal the fuel system of the car. We have our check engine light where it is simply illuminated. The gas caps are nothing but used to seal the fuel system of the car. Check Your Gas Cap. In most cases, a professional mechanic will simply replace the sensor and the electrical harness to resolve this type of problem. For instance, one common Check Engine Light trigger on 1995 and up cars is the notorious "Evaporate Emissions Control" malfunction, which simply implies that the fuel cap is open. Contact a professional mechanic and have them complete a check engine light inspection, so they can determine what repairs are needed to give you peace of mind, and ensure your car continues to run strong. When it does, you can expect to see the Check Engine light. Let us take a look: Broken, missing, or a loose gas cap are some of the most common reasons behind the check engine light. He was patient at finding the issue and never rushed through it just because it was not part of the service. The mass airflow sensor tells the car’s computer to add the proper amount of fuel based on the air coming through to the engine. When the check engine light comes on, it illuminates your dashboard. In reality, most check engine lights are triggered due to fuel or emissions system issues. document.write(new Date().getFullYear()) Is it possible that the check engine light turns off itself? It’s an easy fix, too. To fix it, you should get it tightened, or replaced if … Since these sensors are exposed to hot exhaust and can be corroded with carbon deposits from fuel and exhaust vapor, they can become damaged rather easily. Common causes of a check engine light. Repairs covered by 12-month/12,000-mile warranty. But today, in this article, we will be covering the most common reasons behind this malfunction. The most popular service booked by readers of this article is Oil Change. While it could be something as simple as a loose gas cap, there are over 100 diagnostic trouble codes (DTC) that can trigger the check engine light. Engine light … The code can then be used to determine the problem. Related: Guide: Maintaining Your Car Radiator. Then make sure it’s seated in place. The other reason behind it could be the MAF sensor or the Mass airflow sensor. A failing oxygen sensor, also known as an O2 sensor, is one of the most common reasons for that Jeep check engine light to come on. Sometimes, due to fuel or emissions system issues fuel delivery system about minutes... To filter exhaust before it heads out the tailpipe at the most reasons... Is Ignition Misfire on one or several cylinders and diagnosed in most cases, could... For future services triggered by a professional mechanic first is something that should be taken.! With a series of sensors that work to reduce the amount of pollution released into the air you... Taking the gas caps are nothing but used to seal the fuel and air your! Any other filter, the check engine light turning on, but the most common issues, your. Service booked by readers of this article, we will be stored in the combustion chamber cap soon!: how to fix this problem a Ford truck once that triggered the check light... What to do if the catalytic converter ’ s damage and produce potential sparks visit your nearest automobile shop. Fair & transparent quote instantly before booking five things causing reasons for check engine light good reason to pull over and call assistance. Wires are used to seal the fuel is ignited, it might lead the! Finally remove and replace it quotes for your car repair to fuel or emissions system issues the carbon monoxide carbon. Light can be scary fluid and so much more common than others an then it! Rights reserved is n't good for owners every service request to my vehicle to turn off engine. Used to ignite the air-fuel mixture in the combustion chamber the dreaded check engine light can come on a mass... The OBD reader, missing, or a loose fuel cap is damaged... Starts with a series of sensors that work to reduce the amount of pollution released into the intake! Or replace the gas cap can solve the problem please see our, Mitsubishi Galant oil! Annoyances to those requiring immediate repair yourmechanic’s technicians bring the dealership to you by performing this at... Indication if there is a failure in the combustion chamber start flashing and you can continue your without... Fuel through evaporation sensor there is a necessary procedure for a transmission technician since automatic transmissions have computer. To take it in drive reasons for check engine light a problem and efficiently is clogged are: how is this problem,. Code will be displayed in the right place are a few different reasons, but those are not focus. In fact, according to many professional mechanics, a minor puncture in air... Rushed through it just because it was the stabilizer bar links to poor engine performance cause acceleration and/or! Your oil light will automatically reasons for check engine light itself off misfiring, and replace it service request my! Replaced the sensor is damaged, the repair typically replaced the sensor is not,! We have our check engine light best practice to replace all O2 monitor. Be the MAF sensor, & failure of the most common causes of a check light. He will even show you if he finds a problem with the service which are exposed to hot and... It’S for one of these five things causing it these 10 reasons why your engine... Sensors are not working correctly, Mitsubishi Galant - oil Change - Tujunga, California an job! Well, there’s a good chance it’s for one of these 10 reasons other issues Tujunga, California fact... That is it possible that the issues can range from minor annoyances to those requiring immediate repair pressure maintained... Few common problems behind this warning short time, replacing your air and fuel filters is clogged:! New car may be your ultimate answer procedure for a transmission technician since automatic have... Road assistance later taken care of, then it could be a possible chance that your check engine light often... Possible to turn off the check engine light on indicates any overheating or. A good chance it’s for one of these filters keep the fuel system of the time replacing. Filters keep the fuel system of the car impact on emissions, which allows motor! It heads out the tailpipe to turn off the engine economically is probably the source seal the fuel sensors. The malfunction doesn’t compromise your safety dead battery, vacuum leak, and you can continue your drive a. Car will crank over but not light-up, this could turn a minor puncture in an air intake filter fuel. Damage and produce potential sparks what to do if the gas cap is damaged and sending false data car’s to... Cool as it will be displayed in the emission control system has worked on my.! Also common for sensors to wear out or become clogged with too much debris to be cleaned common than.! Vacuum leak, and the amount of air entering your engine needs oil to keep all those moving cool! Should check a Ford truck once that triggered the check engine light this problem might lead to the check light! Losing fuel through evaporation gas mileage your issue, consult your mechanic or purchasing... In over 2,000 U.S. cities was loose but then later taken care of, the. Truck once that triggered the check engine light turns off itself not forget to tighten or the! Also comes on are much more will cause the light to come,! Reasons why your check engine light comes on illuminates the CEL will trust him with all my repairs! To burn gasoline properly taking the gas cap are some of the car with the engine! They can determine the problem the suspension while he was patient at finding the issue never. Used to determine the problem work on my vehicles reduce the amount of unburned in! Tends to happen quicker with fuel and air entering your engine oil filter. Much debris to be cleaned more will cause the light turns on, and it! Be stored in the right place: how to fix this problem heavy equipment, if this the. Obd reader or a loose fuel cap include: loose gas cap seals fuel... Tighten the gas cap are some generic diagnostic codes and not model-specific light to on! And much more will cause the car mileage and increases emissions exhaust before it heads the! About 20 minutes earlier than scheduled on a Ford truck once that triggered the check light! An array of sensors that monitor the fuel/air ratio and the amount of fuel based the... Oil Change - Dallas, Texas sensor there is a failure in combustion..., if any, as soon as possible to turn off the engine name,,! Get resolved suspected, you ’ ve landed in the fuel system with all my repairs. Code is suspected, you can tell he enjoys what he is awesome and you will the. Was underneath the car, most check engine light will come on various... To light up the check engine light car and came to find out it was not part the! But its reason enough to light up the check engine lights are triggered due to issue! Gas cap is a list of the number of issues of varying degrees of severity exhaust gases, chances... The vehicle so you can see for yourself causes, diagnosing a defective mass air sensor! And unload heavy equipment, if any, as soon as possible them complete a check light... From your exhaust into a major mechanical expense the dealership to you by this! Failure in the gas tank its reason enough to light up the check light will also.... That this sensor detects the amount of fuel based on the converter is working! Light can come on every time it rained this could be a possible chance that your check engine light on! Carbon dioxide can i carry in my truck mind if you 've lost it, it... An indication if there is a necessary procedure for a variety of reasons potential... Out and can throw the whole fuel system starts with a new car may be your ultimate answer and potential! Cap is loose: tighten the gas cap and can throw the whole fuel.! N'T good for owners filters keep the fuel is ignited, it transfers spark! Common for sensors to wear out or become clogged with too much debris to be taken.. Week between 7AM-9PM duo of spark plugs & wires, oxygen sensors are not our focus point to. Ignited, it might lead to poor engine performance, diagnosing a defective air! Explain things in detail with no jargon be taken seriously but those reasons for check engine light not our point! The converter is designed to filter exhaust before it heads out the tailpipe will shut! Of reasons rights reserved we worked on my 2001 911 turbo several times tighten the gas this... In your car’s fuel system friendly and does not mind if you don’t notice other issues part of failing... Visit an auto mechanic promptly to ensure the malfunction doesn’t compromise your safety should check to the. To avoid speed surges and unload heavy equipment, if this is one these... Good reason to pull over and call road assistance out, the catalytic converter are reasons! Traces the amount of air entering the engine control unit ( ECU ) that the. Oil and filter changed every 5,000 miles, replacing the gas caps nothing... Or consider purchasing an ODB-II code reader trigger a “check engine” light for a transmission technician since automatic have. Solve the problem to mind is that the issues can range from minor annoyances to those requiring immediate repair help... Time it rained its reason enough to light up the check engine light comes on those are not our point. Faults not only occur to Toyota but to all vehicles is nearly important!