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2012 Toyota Sequoia Check Engine Light Codes

The check engine light turning on can be quite intimidating to see that little light on your vehicle’s dashboard immediately illuminates, but in reality, it is not something that should cause you to shut down in fear right 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 known as the OBD (on-board computer diagnostic system) in your Sequoia. There are hundreds of individual codes that your check engine light can represent. While that sounds daunting, with a little patience, tackling decisive diagnostics will give you helpful knowledge about your automobile and will also allow that Check Engine Light to do what it is actually supposed to do: be your guide. Unfortunately, visible and helpful automobile symptoms do not always accompany an illuminated Check Engine Light. Since there are hundreds of practical OBD codes, there are also hundreds of practical reasons for the light, including:

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

This is why it is crucial for someone who does not have plentiful of automotive knowledge to not assume what a code means. When your check engine light comes on, you should get it checked out abruptly by a certified Toyota technician. If the engine light comes on due to a appalling concern, you risk harmful your car further by not repairing the issue right away. Call Nalley Toyota of Roswell at 7707637398 abruptly or schedule your check engine light service online today!

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

When your check engine light comes on, this could be as prevailing as tightening or replacing your gas cap. Likewise, the check engine light could also be a warning of a strict problem that could cause strict damage to your engine and come with a enormous repair bill. Depending on your make and model, the check engine light will illuminate or blink. A dependable glow naturally means something less strict but a flashing check engine light indicates that your vehicle’s engine is in strict trouble and service is essential quickly. If your check engine light is flashing in your 2012 Toyota Sequoia, we exceedingly endorse not to drive the vehicle and schedule Toyota service today. Below is a list of the most routine reasons your check engine light can come on:

  • Issues with any aftermarket items. An aftermarket alarm, exhaust or supplemental item can wreak havoc on your 2012 Toyota Sequoia if it’s not installed appropriately. These aftermarket parts and accessories can jettison the battery, trigger the check engine light, or even prevent the vehicle from starting. If these issues sound favored, bring your Sequoia to Toyota and have our team of certified mechanics ensure that your aftermarket items were installed correctly and aren't causing any issue. Getting accessories, especially aftermarket parts and accessories, or using OEM parts first place might cost a small bit more but could save you money from having to get poor work and damage caused by poor installation work corrected.
  • One of the most prevailing and bountiful cause is that your 2012 Toyota Sequoia gas cap is loose, damaged or missing. The gas cap for your 2012 Toyota Sequoia 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 damaging fuel cap? If your gas cap is former 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 expeditiously after you put gas in your 2012 Toyota Sequoia, first thing you should check is to make confident the cap isn’t loose — or that it's still on your car’s roof or at the fuel pump.
  • The battery is low or dead. The battery in your 2012 Toyota Sequoia is every paramount. Without a vehicle battery, your vehicle won’t start, light up the road ahead, play the radio or charge your phone. Today’s vehicle batteries last much longer than they did a few decades ago, and they don't really require maintenance. The value of a new one depends on the type of Toyota you drive, but check our contemporary service coupons and specials.
  • Your 2012 Toyota Sequoia has a vacuum leak. Every Toyota Sequoia has a vacuum system that performs a expansive variety of functions. The vacuum system also helps lower damaging 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 exciting heat or extreme exasperated.
  • Your catalytic converter is damaging or going damaging. The catalytic converter is a part of your 2012 Toyota Sequoia’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 usually caused by neglected maintenance, which is why Nalley Toyota of Roswell 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 Sequoia will not pass an emissions test, show a lack of engine performance and will negatively affect your fuel economy. Your vehicle may run at a higher temperature, too, which can cause supplemental problems from overheating.
  • Your O2 Sensor (Oxygen Sensor) needs to be replaced. The Oxygen sensor, known as the O2 sensor, measures the discard of oxygen in your exhaust system. If there is excess oxygen in your exhaust system, fuel burns faster and your vehicle will be less compelling 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 Sequoia's spark plugs. The O2 sensor sends data to the vehicle’s onboard computer to imply the right range of air and fuel that enters the cylinders in your engine. A damaging O2 sensor can also cause a vehicle to fail an emissions test.
  • Your mass airflow sensor (known as MAF) needs to be replaced. The mass airflow sensor in your Toyota Sequoia is what determines how much fuel is crucial to run your engine efficiently by measuring the discard 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 Sequoia 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 damaging mass airflow sensor.
  • New Spark Plugs or Plug Wires are crucial for your 2012 Toyota Sequoia. The spark plugs are the part of your engine that ignites the air/fuel range 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 damaging or former, 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, considerable to more expensive repairs.

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

If the check engine light is flashing, this means that there is a threatening issue and it is recommended to service your Toyota Sequoia urgently. This question is not immensely uncomplicated 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 active to drive. This is continuously 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 critical problem. Call the mentors at Nalley Toyota of Roswell by dialing 7707637398 so you can describe the issues. Or reduce your speed and bring your 2012 Toyota to our certified mechanics as soon as attainable.

Will the check engine light reset itself?

The check engine light on your 2012 Toyota Sequoia will frequently shut itself off if the issue or code that caused it to turn on is serviced. 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 diverse 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 Sequoia 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 bring it in to Nalley Toyota of Roswell so the light and code can be double-checked and reset.

2012 Toyota Sequoia Check Engine Light Flashing

Although there are frequent attainable causes of an illuminated Check Engine Light, we know from years of providing Check Engine Light Diagnosis Service that there are several prevailing causes including something as classic as a loose gas cap. Distinctive prevailing reasons for a Check Engine Light are dirty mass airflow sensor, faulty emissions control part, faulty head gasket, a malfunction with the fuel injection system, damaged oxygen sensor, or defective spark plugs to name frequent. 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 decisive 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 serviced.

Every 2012 Toyota Sequoia was designed with a high-technology performance monitoring system with a computer, and a series of sensors positioned strategically throughout the vehicle on its certain 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 illuminates 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; Nalley Toyota of Roswell provides a Check Engine Light Diagnosis Service that isolates the core problem and gives you a recommendation on what to do next from a Hugely Qualified Service professional.

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 draconian failure like a damaging catalytic converter or a problem with one of the car's oxygen sensors, so it fearless to get the apt code reading and diagnosis. The average estimate for a check engine light diagnosis & testing is continually between $88 and $111. The fearless news, Nalley Toyota of Roswell offers complimentary multi-point inspections and free diagnostics, in most cases, to help select the cause of your check engine light.

Check Engine Light Service 2012 Toyota Sequoia

What do you do when you’re driving along in your Toyota Sequoia and rapidly, a yellow light illuminates on your dash and says "Check Engine". If you’re like most Toyota owners, your heart sinks a little because you have little 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 Sequoia checked as soon as viable. Ignoring that warning could end up causing gigantic damage to expensive engine components.

When your 2012 Toyota Sequoia's ECM (electronic control module), which is the vehicle's onboard computer, finds a problem in the electronic control system that it can’t handy, a computer turns on your check engine light. This amber or yellow light is ordinarily 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 electronic inspect tool that is used by our Toyota auto repair mechanics at Nalley Toyota of Roswell. There are also a number of relatively cheap code readers that are designed for do-it-yourselfers, should you pick that route too. While this code will tell you the issue that is detected, a true diagnosis still requires an experienced skilled to imply the issue and repair it.

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

If you check engine light is flashing, we recommend that you pull over and contact Nalley Toyota of Roswell to help learn if your vehicle is safe to drive in or if we recommend a tow truck. The safest bet is to decipher the code and then plan your strategy appropriately. Since every check engine code has its own level of severity, it is difficult to predict how countless miles you can drive with the warning light on. It could be anything from a harmful sensor to plug wires needing to be changed.

What Does the Check Engine Light Mean?

One of the most commonly misunderstood lights or indicators in your 2012 Toyota Sequoia is the check engine light. The check engine light is part of the onboard diagnostics system, and displays in a few different 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 vehicle. Onboard computers increasingly have controlled and monitored vehicle performance since the 80s and do a variety of things for your 2012 Toyota Sequoia. Some of these include shifting automatic transmissions controlling engine speed, ignition timing, and implementing stability control, just to name a few. With that being said, the check engine light can indicate a variety of contrasting things. It can be as conspicuous as your gas cap being loose or as unhealthy as engine knocking. If your check engine light is on in your 2012 Toyota Sequoia, contact Nalley Toyota of Roswell. Our Toyota service department can help you choose what code is turning your check engine light on or diagnose why your check engine light is flashing. Contact Nalley Toyota of Roswell today!

2012 Toyota Sequoia Check Engine Light

If the check engine light in your 2012 Toyota Sequoia starts flashing, that means that the problem needs prompt attention and your Toyota should be transported in immediately. A flashing light indicates that the problem is critical and if not taken care of immediately may result in major damage to the vehicle. This blinking light ordinarily hints a rigorous engine misfire allowing unused fuel to be ditched into the exhaust system. There it can promptly surge the temperature of the catalytic converter to a point where damage is likely, requiring an costly repair. Some owners ask if spark plugs cause the check engine light to flash? This can precisely be the cause. A bad, old or dirty spark plug can cause the engine to misfire. If your check engine light is flashing, please contact our team of automotive experts at Nalley Toyota of Roswell rapidly by calling 7707637398. If the problem is ignored or you continue to travel to work, this can spread to the spark plug wires, catalytic converter, or ignition coils which can lead to a very expensive repair.