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What Does the Check Engine Light Mean?

One of the most frequently misunderstood lights or indicators in your 2012 Toyota Corolla is the check engine light. The check engine light is part of the onboard diagnostics system, and displays in a few contrasting ways. It can say "Check Engine", it can be a symbol of an engine, it can even be a combination of both. This light illuminates in either an amber or red color and is part of the diagnostics system found on your automobile. Onboard computers increasingly have controlled and monitored automobile performance since the 80s and do a variety of things for your 2012 Toyota Corolla. Some of these include controlling engine speed, shifting automatic transmissions ignition timing, and implementing stability control, just to name a few. With that being said, the check engine light can mean a range of distinctive things. It can be as uncomplicated as your gas cap being loose or as hazardous as engine knocking. If your check engine light is on in your 2012 Toyota Corolla, contact Coggin Toyota at the Avenues. Contact Coggin Toyota at the Avenues today! Our Toyota service department can help you find out what code is turning your check engine light on or diagnose why your check engine light is flashing.

2012 Toyota Corolla Check Engine Light Flashing

Although there are countless potential causes of an illuminated Check Engine Light, we know from years of providing Check Engine Light Diagnosis Service that there are copious known causes including something as friendly as a loose gas cap. Substitute known reasons for a Check Engine Light are dirty mass airflow sensor, faulty head gasket, faulty emissions control part, damaged oxygen sensor, a malfunction with the fuel injection system, or defective spark plugs to name a few. No matter what is the root cause of the Check Engine Light, we have the Toyota Certified Technicians and the certified service protocol to isolate the root problem and repair it as needed to restore factory specifications. When this happens, the Check Engine Light turns off, and you can leave the service center knowing that your Toyota issue was fixed.

Every 2012 Toyota Corolla was designed with a high-technology performance monitoring system with a computer, and a series of sensors positioned strategically throughout the vehicle on its severe systems. The sensors are continually detecting conditions while sending data to the electronic control unit. If the electronic control unit detects that the data is out of factory specifications, the Check Engine Light brightens telling you that there is a problem. However, that is the limitation of the Check Engine Light – it won’t tell you what exactly is mistaken nor what to do about it. That’s where we come in; Coggin Toyota at the Avenues provides a Check Engine Light Diagnosis Service that isolates the core problem and gives you a recommendation on what to do next from a Highly Qualified Service professional.

What could cause the check engine light to come on in a 2012 Toyota Corolla?

When your check engine light comes on, this could be as conspicuous as tightening or replacing your gas cap. Likewise, the check engine light could also be a warning of a rare problem that could cause rare damage to your engine and come with a extensive repair bill. Depending on your make and model, the check engine light will illuminate or blink. A plausible glow ordinarily means something less rare but a twinkling check engine light illustrates that your vehicle’s engine is in rare trouble and service is essential swiftly. If your check engine light is twinkling in your 2012 Toyota Corolla, we exceedingly indicate not to drive the automobile and schedule Toyota service now. Below is a list of the most normal reasons your check engine light can come on:

  • Your catalytic converter is bad or going bad. The catalytic converter is a part of your 2012 Toyota Corolla’s exhaust system. The catalytic converter's function is to turn the carbon monoxide created by the combustion process into carbon dioxide. A damaged catalytic converter is consistently caused by neglected maintenance, which is why Coggin Toyota at the Avenues offers a complimentary multi-point inspection with every Toyota service. If you have an issue with your catalytic converter and don't get it repaired, your 2012 Toyota Corolla will not pass an emissions test, show a lack of engine performance and will negatively affect your fuel economy. Your car may run at a higher temperature, too, which can cause contrasting problems from overheating.
  • Your O2 Sensor (Oxygen Sensor) needs to be replaced. The Oxygen sensor, normal as the O2 sensor, measures the dump of oxygen in your exhaust system. If there is excess oxygen in your exhaust system, fuel burns faster and your vehicle will be less lucid when it comes to fuel economy. So what happens if I don’t replace your O2 sensor? A faulty sensor can not only affect your miles per gallon, but it can cause damage to your catalytic converter and your 2012 Toyota Corolla's spark plugs. The O2 sensor sends data to the vehicle’s onboard computer to advocate the decent mixture of air and fuel that enters the cylinders in your engine. A bad O2 sensor can also cause a car to fail an emissions test.
  • New Spark Plugs or Plug Wires are needed for your 2012 Toyota Corolla. The spark plugs are the part of your engine that ignites the air/fuel mixture in the combustion chamber of your vehicle. This explosion is what moves the pistons and makes the engine run. The spark plug wires deliver the spark from the ignition coil to the spark plugs. If your spark plugs or spark plug wires are bad or old, you will experience poor performance and reduced power. In some extreme cases, your engine will have trouble starting or continuing to run. Worn spark plugs and plug wires can cause clogged catalytic converter or damage to ignition coils and O2 sensors, leading to more expensive repairs.
  • The battery is low or dead. The battery in your 2012 Toyota Corolla is every active. Without a car battery, your car won’t start, light up the road ahead, play the radio or charge your phone. Today’s car batteries last much longer than they did a few decades ago, and they don't truly require maintenance. The price of a new one depends on the type of Toyota you drive, but check our current service coupons and specials.
  • Issues with any aftermarket items. An aftermarket alarm, exhaust or contrasting item can wreak havoc on your 2012 Toyota Corolla if it’s not installed perfectly. These aftermarket parts and accessories can drain the battery, trigger the check engine light, or even stop the vehicle from starting. If these issues sound commonplace, bring your Corolla to Toyota and have our team of certified mechanics ensure that your aftermarket items were installed well and aren't causing any issue. Getting accessories, especially aftermarket parts and accessories, or using OEM parts earliest place might cost a tiny bit more but could save you money from having to get poor function and damage caused by poor installation function corrected.
  • One of the most normal and frequent cause is that your 2012 Toyota Corolla gas cap is loose, damaged or missing. The gas cap for your 2012 Toyota Corolla serves multiple purposes. It prevents gas fumes from being released when you aren't driving, it seals the fuel system and helps maintain pressure within the fuel tank. What happens if you have a bad fuel cap? If your gas cap is old or has a ruptured seal, you can lose fuel through evaporation which will result in more trips to the pump. Luckily, to replace a gas cap isn't expensive. If your check engine light turns on immediately after you put gas in your 2012 Toyota Corolla, earliest thing you should check is to make bold the cap isn’t loose — or that it's still on your car’s roof or at the fuel pump.
  • Your mass airflow sensor (known as MAF) needs to be replaced. The mass airflow sensor in your Toyota Corolla is what determines how much fuel is needed to run your engine efficiently by measuring the dump of air entering the engine. As a part of the engine management system, the mass airflow sensor helps adjust to certain changes, like altitude. If your Toyota Corolla is having trouble starting, idling rough or has a hasty change in the position of the throttle pedal, this could be a sign of a bad mass airflow sensor.
  • Your 2012 Toyota Corolla has a vacuum leak. Every Toyota Corolla has a vacuum system that performs a wide variety of functions. The vacuum system also helps reduce harmful emissions by routing the fumes as gasoline evaporates through the engine. If you notice that your RPM is high in idle or randomly surges, a vacuum leak could be the cause. Over time, vacuum hoses can dry out and crack, especially if they’re exposed to intense heat or extreme affable.

Will the check engine light reset itself?

The check engine light on your 2012 Toyota Corolla will usually shut itself off if the issue or code that caused it to turn on is fixed. For example, if the cause of your check engine light coming on was a loose gas cap, if it's tightened, the light will turn itself off. Likewise, if your catalytic converter is going functional, and you did a lot of stop-and-go driving, that may have turned on the check engine light due to the high usage of the converter. In most cases, your 2012 Toyota Corolla light will go off after about 20-40 miles. If you drive over that amount and the light is still on, you will need to transport it in to Coggin Toyota at the Avenues so the light and code can be double-checked and reset.

2012 Toyota Corolla Check Engine Light

If the check engine light in your 2012 Toyota Corolla starts flashing, that means that the problem needs prompt attention and your Toyota should be brought in immediately. A flashing light expresses that the problem is unhealthy and if not taken care of immediately may result in major damage to the vehicle. This blinking light ordinarily hints a strict engine misfire allowing unburned fuel to be jettisoned into the exhaust system. There it can quickly raise the temperature of the catalytic converter to a point where damage is achievable, requiring an expensive repair. Some owners ask if spark plugs cause the check engine light to flash? This can exactly be the cause. A detrimental, departed or dirty spark plug can cause the engine to misfire. If the problem is ignored or you continue to drive, this can spread to the spark plug wires, catalytic converter, or ignition coils which can lead to a very expensive repair. If your check engine light is flashing, please contact our unit of automotive consultants at Coggin Toyota at the Avenues immediately by calling 9043376618.

Is it safe to drive your 2012 Toyota Corolla with the check engine light on?

If the check engine light is flashing, this means that there is a unhealthy issue and it is recommended to service your Toyota Corolla hastily. This question is not very easy because it all depends on the severity of the issue. If the cause is a minor issue, such as a loose gas cap, it should be reliable to drive. This is naturally indicated by a steady glow of the check engine light. If you notice a difference in the performance of the vehicle, it could be an indication of a more hazardous problem. Call the mentors at Coggin Toyota at the Avenues by dialing 9043376618 so you can describe the issues. Or reduce your speed and bring your 2012 Toyota to our certified technicians as soon as viable.

2012 Toyota Corolla Check Engine Light Codes

The check engine light turning on can be quite intimidating to see that miniature light on your vehicle’s dashboard suddenly illuminates, but in reality, it is not something that should cause you to shut down in fear decent away. If you hear the term, diagnostic trouble codes (DTC), these are just another name for check engine light codes. These are automotive computer codes stored by the ECM, also commonplace as the OBD (on-board computer diagnostic system) in your Corolla. There are hundreds of divergent codes that your check engine light can represent. While that sounds daunting, with a miniature patience, tackling crucial diagnostics will give you accessible knowledge about your automobile and will also allow that Check Engine Light to do what it is genuinely supposed to do: be your guide. Regrettably, discernible and accessible automobile symptoms do not always accompany an illuminated Check Engine Light. Since there are hundreds of real OBD codes, there are also hundreds of real reasons for the light, including:

  • Bad Spark Plugs
  • Ignition system faults
  • Loose Gas Cap or Missing Gas Cap
  • Fuel and air metering systems problems
  • O2 Sensor
  • Emissions controls issues
  • Computer output circuit issues
  • Transmission issues
  • Old Battery

This is why it is crucial for someone who does not have a lot of automotive knowledge to not assume what a code means. When your check engine light comes on, you should get it checked out quickly by a certified Toyota mechanic. If the engine light comes on due to a harsh concern, you risk damaging your car extra by not repairing the issue polite away. Call Coggin Toyota at the Avenues at 9043376618 today or schedule your check engine light service online today!

How much does it cost to get the engine light checked?

The check engine light warns of issues ranging from a gas cap that's not properly tightened to a more strict failure like a bad catalytic converter or a problem with one of the car's oxygen sensors, so it excellent to get the fitting code reading and diagnosis. The average cost for a check engine light diagnosis & testing is mostly between $88 and $111. The excellent news, Coggin Toyota at the Avenues offers complimentary multi-point inspections and free diagnostics, in most cases, to aid indicate the cause of your check engine light.

How many miles can you drive with the check engine light?

The safest bet is to decipher the code and then plan your strategy accordingly. Since each check engine code has its own level of severity, it is difficult to predict how frequent miles you can drive with the warning light on. It could be anything from a bad sensor to plug wires needing to be replaced. If you check engine light is flashing, we advocate that you pull over and contact Coggin Toyota at the Avenues to help mean if your vehicle is safe to drive in or if we advocate a tow truck.

Check Engine Light Service 2012 Toyota Corolla

What do you do when you’re driving along in your Toyota Corolla and instantly, a yellow light illuminates on your dash and says "Check Engine". If you’re like most Toyota owners, your heart sinks a tiny because you have tiny idea about what that light is trying to tell you or how you should react. The fear of the unknown (or the cost of the unknown) can be just as stressful. But take a deep breath and realize the light coming on doesn’t mean you have to pull the vehicle over to the side of the road and call a tow truck, but it is recommended that you get your 2012 Toyota Corolla checked as soon as achievable. Ignoring that warning could end up causing major break to expensive engine elements.

When your 2012 Toyota Corolla's ECM (electronic control module), which is the vehicle's onboard computer, finds a problem in the electronic control system that it can’t polite, a computer turns on your check engine light. This amber or yellow light is often labeled “check engine” or “service engine soon”, or the light may be nothing more than a picture of an engine, or a picture of the engine with the word “check.”

When the light turns on, the ECM stores an engine code or “trouble code” in its memory that identifies as the issue, whether it's a sensor or a failing engine part. This code is read with an computerized investigate tool that is used by our Toyota auto repair mechanics at Coggin Toyota at the Avenues. There are also a number of relatively inexpensive code readers that are designed for do-it-yourselfers, should you select that route too. While this code will tell you the issue that is detected, a true diagnosis still requires an experienced active to determine the issue and repair it.