Why would a Prius check engine light come on?

Please wait while the page loads...

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

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

What could cause the check engine light to come on in a 2020 Toyota Prius?

When your check engine light comes on, this could be as simple as tightening or replacing your gas cap. Also, the check engine light could still be a warning of a meaningful problem that could cause serious damage to your engine and come with a hefty and costly repair bill. Depending on your make and model, the check engine light will illuminate or blink. A steady and continuous glow generally means something less serious but a flashing check engine light indicates that your vehicle’s engine is in meaningful trouble and helpful service is needed quickly. If your check engine light is flashing in your 2020 Toyota Prius, we very suggest not to drive the vehicle and schedule Toyota service today. Below is a list of the most common reasons your check engine light can come on:

  • Your O2 Sensor (Oxygen Sensor) needs to be replaced. The Oxygen sensor, known as the O2 sensor, measures the amount of oxygen in your exhaust system. If there is excess oxygen in your exhaust system, fuel burns more expeditiously and your vehicle will be less efficient when it comes to fuel economy. So what happens if I don’t replace your O2 sensor? A defective sensor can not only affect your miles per gallon, but it can cause serious damage to your catalytic converter and your 2020 Toyota Prius's spark plugs. The O2 sensor sends data to the vehicle’s onboard computer to determine the definitely correct mix of air and fuel that enters the cylinders in your engine. A defective O2 sensor can again cause a car to fail an emissions test.
  • Your catalytic converter is bad or going bad. The catalytic converter is a part of your 2020 Toyota Prius’s exhaust system. The catalytic converter's function is to turn the carbon monoxide created by the combustion process into carbon dioxide. A broken catalytic converter is normally caused by consistently neglected maintenance, which is why Courtesy Toyota of Brandon offers a complimentary multi-point check with each Toyota service. If you have an issue with your catalytic converter and don't get it repaired, your 2020 Toyota Prius 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 other dangerous problems from overheating.
  • Issues with any aftermarket items. An aftermarket alarm, exhaust or other item can wreak extreme havoc on your 2020 Toyota Prius if it’s not installed properly. These aftermarket parts and accessories can drain the battery, trigger the check engine light, or even prevent the vehicle from starting. If these issues sound familiar, bring your Prius to Toyota and have our team of skilled certified mechanics ensure that your aftermarket items were installed accurately and aren't causing any issue. Getting accessories, exceptionally aftermarket parts and accessories, or utilizing OEM parts first place might cost a little bit more but could help you save substantially from having to get poor work and damage caused by poor installation work corrected.
  • Your mass airflow sensor (known as MAF) needs to be replaced. The mass airflow sensor in your Toyota Prius is what determines how much fuel is necessary to run your engine efficiently by measuring the amount 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 Prius is having trouble starting, idling rough or has a sudden speedy change in the position of the throttle pedal, this could be a essential sign of a defective mass airflow sensor.
  • The battery is low or dead. The battery in your 2020 Toyota Prius is each critical. Without a car battery, your car won’t start, light up the road in front, 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 genuinely require maintenance. The price of a new one depends on the type of Toyota you drive, but check our current service coupons and specials.
  • Your 2020 Toyota Prius has a vacuum leak. Each Toyota Prius has a vacuum system that performs a wide variety of functions. The vacuum system again helps lower adverse 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, exceptionally if they’re exposed to intense heat or extreme cold.
  • One of the most common and frequent cause is that your 2020 Toyota Prius gas cap is loose, broken or missing. The gas cap for your 2020 Toyota Prius serves numerous purposes. It prevents unpredictable 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 defective 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 and be more expensive. Luckily, to replace a gas cap isn't expensive. If your check engine light turns on immediately after you put gas in your 2020 Toyota Prius, first thing you should check is to make sure the cap isn’t loose — or that it's still on your car’s roof or at the fuel pump.
  • New Spark Plugs or Plug Wires are necessary for your 2020 Toyota Prius. The spark plugs are the part of your engine that ignites the air/fuel mix in the combustion chamber of your vehicle. This explosion is what moves the pistons and makes the engine run smooth. 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 a conspicuous poor performance and decreased 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.

2020 Toyota Prius Check Engine Light Codes

The check engine light turning on can be quite intimidating, exceptionally to see that little light on your vehicle’s dashboard suddenly illuminate, 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 Prius. There are hundreds of different codes that your check engine light can accurately represent. While that sounds daunting, with a little patience, tackling basic diagnostics will give you useful knowledge about your car and will also allow that crucial Check Engine Light to do what it is genuinely supposed to do: be your guide. Sadly, apparent and helpful car symptoms do not consistently accompany an illuminated Check Engine Light. Since there are hundreds of imaginable OBD codes, there are also hundreds of imaginable reasons for the light, including:

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

This is why it is critical for someone who does not have a lot of prevailing automotive knowledge to not assume what a code means. When your check engine light comes on, you should get it checked out instantly by a adept certified Toyota mechanic. Call Courtesy Toyota of Brandon at 8132854632 today or schedule your check engine light service online today! If the engine light comes on due to a serious concern, you risk damaging your car further by not repairing the issue right away.

2020 Toyota Prius 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 many common causes including something as simple as a loose gas cap. Other generally common reasons for a Check Engine Light are faulty head gasket, broken oxygen sensor, defective emissions control part, dirty mass airflow sensor, a malfunction with the fuel injection system, or broken 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 totally repair it as necessary 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 completely fixed.

Every 2020 Toyota Prius was designed with a high-technology performance monitoring system with a computer, and a series of sensors positioned strategically throughout the vehicle on its vital systems. The speedy sensors are continually detecting conditions while sending critical 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. Yet, sadly that is the limitation of the Check Engine Light – it won’t tell you what absolutely is wrong nor what to do about it. That’s where we come in; Courtesy Toyota of Brandon provides a Check Engine Light Diagnosis Service that isolates the core problem and gives you a recommendation on what to do next from a Extremely 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 perfectly tightened to a more serious failure like a bad catalytic converter or a problem with one of the car's oxygen sensors, so it good to get the proper code reading and diagnosis. The average cost for a check engine light diagnosis & testing is ordinarily between $88 and $111. The good news, Courtesy Toyota of Brandon offers totally free multi-point inspections and free diagnostics, in most cases, to help determine the cause of your check engine light.

Will the check engine light reset itself?

The check engine light on your 2020 Toyota Prius will ordinarily shut itself off if the issue or code that caused it to turn on is fixed. For instance, if the cause of your check engine light coming on was a loose gas cap, if it's tightened, the light will rapidly turn itself off. Again, if your catalytic converter is working perfectly, 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 2020 Toyota Prius 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 Courtesy Toyota of Brandon so the light and code can be double-checked and reset.

2020 Toyota Prius Check Engine Light

If the check engine light in your 2020 Toyota Prius starts flashing, that means that the problem needs attention rapidly and your Toyota should be brought in swiftly. A flashing light reveals that the problem is immensely serious and if not taken care of rapidly may result in major and meaningful damage to the car. This blinking light ordinarily reveals a severe engine misfire allowing unburned fuel to be dumped into the exhaust system. There it can instantly raise the temperature of the catalytic converter to a point where damage is likely, requiring an costly and major repair. Some owners ask if spark plugs cause the check engine light to flash? This can absolutely be the cause. A faulty, old or dirty spark plug can cause the engine to misfire. If the problem is completely ignored or you continue to drive, this can spread to the spark plug wires, catalytic converter, or ignition coils which can lead to a exceptionally costly repair. If your check engine light is invariably flashing, please contact our team of automotive experts at Courtesy Toyota of Brandon swiftly by calling 8132854632.

What Does the Check Engine Light Mean?

One of the most frequently misunderstood lights or indicators in your 2020 Toyota Prius is the check engine light. The check engine light is part of the crucial onboard diagnostics system, and displays in a variety of 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 2020 Toyota Prius. Some of these essential duties include controlling engine speed, ignition timing, shifting automatic transmissions and implementing stability control, just to name a few. With that being said, the check engine light can mean a variety of different things. It can be as simple as your gas cap being loose or as perilous as engine knocking. If your check engine light is on in your 2020 Toyota Prius, contact Courtesy Toyota of Brandon. 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. Contact Courtesy Toyota of Brandon today!

Check Engine Light Service 2020 Toyota Prius

What do you do when you’re driving along in your Toyota Prius and suddenly, a yellow light illuminates on your dash and says "Check Engine". If you’re like most Toyota owners, your heart sinks exceptionally because you may have exactly 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, serene breath and realize the light coming on doesn’t mean you have to pull the car over to the side of the road and call a tow truck, but it is suggested that you get your 2020 Toyota Prius checked expeditiously. Ignoring that warning could end up causing major, considerable damage to expensive engine components.

When your 2020 Toyota Prius's ECM (electronic control module), which is the vehicle's onboard computer, finds a problem in the electronic control system that it can’t correct, a computer turns on your check engine light. This amber or yellow light is usually 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 can swiftly identify the issue, whether it's a sensor or a failing engine part. This code is read with an electronic scan tool that is used by our Toyota auto repair mechanics at Courtesy Toyota of Brandon. There are still a number of comparatively 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 professional to determine the definitely correct issue and repair it.

Is it safe to drive your 2020 Toyota Prius with the check engine light on?

This question is not remarkably simple 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 safe to drive. This is typically 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 serious problem. If the check engine light is flashing, this means that there is a serious issue and it is advised to service your Toyota Prius swiftly. Call the experts at Courtesy Toyota of Brandon by dialing 8132854632 so you can describe the issues. Or lessen your speed and bring your 2020 Toyota to our certified mechanics as soon as imaginable.

Can I drive my Prius with check engine light on?

If the cause is a minor issue, such as a loose gas cap, it should be safe to drive. This is typically 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 serious problem.

What causes check engine light Prius?

2021 Toyota Prius Check Engine Light Flashing Other mostly common reasons for a Check Engine Light are dirty mass airflow sensor, broken emissions control part, broken oxygen sensor, broken head gasket, a malfunction with the fuel injection system, or damaged spark plugs to name a few.

What is the most common reason for the check engine light to come on?

The emissions/exhaust system is the most likely culprit for many check engine lights being illuminated. There could be an exhaust leak or a problem with the catalytic converter. The mass airflow sensor (MAF) is another sensor that is easily tripped or can fail.

Can I drive my Toyota with check engine light?

This is a sign you should stop driving and have your car looked at by a mechanic as soon as possible. Use your best judgment on whether to call a tow truck or drive yourself to a nearby repair shop.