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2021 Jeep Grand Cherokee L 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 Grand Cherokee L. There are hundreds of different codes that your check engine light can properly represent. While that sounds daunting, with a little patience, tackling basic diagnostics will give you advantageous knowledge about your car and will also allow that important Check Engine Light to do what it is genuinely supposed to do: be your guide. Sadly, obvious and helpful car symptoms do not constantly accompany an illuminated Check Engine Light. Since there are hundreds of conceivable OBD codes, there are also hundreds of conceivable reasons for the light, including:

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

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. Call Mike Shaw Chrysler Dodge Jeep Ram at 9702364701 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. When your check engine light comes on, you should get it checked out expeditiously by a skillful certified Jeep mechanic.

What Does the Check Engine Light Mean?

One of the most commonly misunderstood lights or indicators in your 2021 Jeep Grand Cherokee L is the check engine light. The check engine light is part of the critical onboard diagnostics system, and displays in a wide range 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 wide range of things for your 2021 Jeep Grand Cherokee L. 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 hazardous as engine knocking. If your check engine light is on in your 2021 Jeep Grand Cherokee L, contact Mike Shaw Chrysler Dodge Jeep Ram. Our Jeep 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 Mike Shaw Chrysler Dodge Jeep Ram today!

What could cause the check engine light to come on in a 2021 Jeep Grand Cherokee L?

When your check engine light comes on, this could be as simple as tightening or replacing your gas cap. Again, the check engine light could likewise be a warning of a serious 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 typically means something less serious but a flashing check engine light indicates that your vehicle’s engine is in serious trouble and helpful service is required instantly. If your check engine light is flashing in your 2021 Jeep Grand Cherokee L, we exceedingly advocate not to drive the car and schedule Jeep service today. Below is a list of the most common reasons your check engine light can come on:

  • New Spark Plugs or Plug Wires are required for your 2021 Jeep Grand Cherokee L. 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 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 noticeable 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.
  • 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 immediately 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 damaged sensor can not only affect your miles per gallon, but it can cause significant damage to your catalytic converter and your 2021 Jeep Grand Cherokee L's spark plugs. The O2 sensor sends data to the vehicle’s onboard computer to determine the precisely correct mixture of air and fuel that enters the cylinders in your engine. A damaged O2 sensor can still cause a car to fail an emissions test.
  • The battery is low or dead. The battery in your 2021 Jeep Grand Cherokee L is each essential. 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 absolutely require maintenance. The price of a new one depends on the type of Jeep you drive, but check our current service coupons and specials.
  • Your 2021 Jeep Grand Cherokee L has a vacuum leak. Each Jeep Grand Cherokee L has a vacuum system that performs a wide variety of functions. The vacuum system still helps lower 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 cold.
  • Your catalytic converter is bad or going bad. The catalytic converter is a part of your 2021 Jeep Grand Cherokee L’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 invariably neglected maintenance, which is why Mike Shaw Chrysler Dodge Jeep Ram offers a complimentary multi-point inspection with each Jeep service. If you have an issue with your catalytic converter and don't get it repaired, your 2021 Jeep Grand Cherokee L 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.
  • Your mass airflow sensor (known as MAF) needs to be replaced. The mass airflow sensor in your Jeep Grand Cherokee L is what determines how much fuel is required 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 Jeep Grand Cherokee L is having trouble starting, idling rough or has a sudden rapid change in the position of the throttle pedal, this could be a critical sign of a damaged mass airflow sensor.
  • One of the most common and frequent cause is that your 2021 Jeep Grand Cherokee L gas cap is loose, damaged or missing. The gas cap for your 2021 Jeep Grand Cherokee L serves different purposes. It prevents dangerous 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 damaged 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 promptly after you put gas in your 2021 Jeep Grand Cherokee L, 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.
  • Issues with any aftermarket items. An aftermarket alarm, exhaust or other item can wreak extreme havoc on your 2021 Jeep Grand Cherokee L if it’s not installed perfectly. These aftermarket components 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 Grand Cherokee L to Jeep and have our team of skilled certified mechanics ensure that your aftermarket items were installed perfectly and aren't causing any issue. Getting accessories, especially aftermarket parts and accessories, or using OEM components 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.

Is it safe to drive your 2021 Jeep Grand Cherokee L with the check engine light on?

If the check engine light is flashing, this means that there is a serious issue and it is recommended to service your Jeep Grand Cherokee L quickly. This question is not exceptionally 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. Call the experts at Mike Shaw Chrysler Dodge Jeep Ram by dialing 9702364701 so you can describe the issues. Or reduce your speed and bring your 2021 Jeep to our certified mechanics as shortly as imaginable.

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

Since each check engine code has its own level of severity, it is usually difficult to predict how many miles you can be safe in driving 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 recommend that you pull over and contact Mike Shaw Chrysler Dodge Jeep Ram to help determine if your car 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 accordingly.

2021 Jeep Grand Cherokee L 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, dirty mass airflow sensor, broken emissions control part, damaged oxygen sensor, a malfunction with the fuel injection system, or faulty spark plugs to name a few. No matter what is the root cause of the Check Engine Light, we have the Jeep Certified Mechanics and the certified service protocol to isolate the root problem and totally 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 Jeep issue was entirely fixed.

Every 2021 Jeep Grand Cherokee L was designed with a high-technology performance monitoring system with a computer, and a series of sensors positioned strategically throughout the car on its important systems. The rapid sensors are continually detecting conditions while sending important 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 specifically is wrong nor what to do about it. That’s where we come in; Mike Shaw Chrysler Dodge Jeep Ram provides a Check Engine Light Diagnosis Service that isolates the core problem and gives you a recommendation on what to do next from a Tremendously 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 typically between $88 and $111. The good news, Mike Shaw Chrysler Dodge Jeep Ram offers totally free multi-point inspections and free diagnostics, in most cases, to help determine the cause of your check engine light.

2021 Jeep Grand Cherokee L Check Engine Light

A flashing light reveals that the problem is remarkably serious and if not taken care of instantly may result in major and serious damage to the car. If the check engine light in your 2021 Jeep Grand Cherokee L starts flashing, that means that the problem needs attention instantly and your Jeep should be brought in quickly. This blinking light ordinarily indicates a severe engine misfire allowing unburned fuel to be dumped into the exhaust system. There it can quickly raise the temperature of the catalytic converter to a point where damage is likely, requiring an costly and huge repair. Some owners ask if spark plugs cause the check engine light to flash? This can exactly be the cause. A defective, 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 very costly repair. If your check engine light is consistently flashing, please contact our team of automotive experts at Mike Shaw Chrysler Dodge Jeep Ram instantly by calling 9702364701.

Check Engine Light Service 2021 Jeep Grand Cherokee L

What do you do when you’re driving along in your Jeep Grand Cherokee L and suddenly, a yellow light illuminates on your dash and says "Check Engine". If you’re like most Jeep owners, your heart sinks extremely because you may have specifically 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 vehicle over to the side of the road and call a tow truck, but it is suggested that you get your 2021 Jeep Grand Cherokee L checked swiftly. Ignoring that warning could end up causing major, far-reaching damage to expensive engine components.

When your 2021 Jeep Grand Cherokee L'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 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 can expeditiously 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 Jeep auto repair mechanics at Mike Shaw Chrysler Dodge Jeep Ram. There are likewise a number of comparatively inexpensive 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 professional to determine the precisely correct issue and repair it.

Will the check engine light reset itself?

The check engine light on your 2021 Jeep Grand Cherokee L will normally 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 instantly turn itself off. Also, 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 2021 Jeep Grand Cherokee L 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 Mike Shaw Chrysler Dodge Jeep Ram so the light and code can be double-checked and reset.