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

The middle rate for a check engine light diagnosis & testing is frequently between $88 and $111. The best news, Audi Creve Coeur offers complimentary multi-point inspections and free diagnostics, in most cases, to help endorse the cause of your check engine light. The check engine light warns of issues ranging from a gas cap that's not accurately tightened to a more genuine failure same a bad catalytic converter or a problem with one of the car's oxygen sensors, so it best to get the handy code reading and diagnosis.

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

If you check engine light is flashing, we advise that you pull over and contact Audi Creve Coeur to assist mean if your vehicle is safe to commute in or if we advise a tow truck. The safest bet is to decipher the code and then plan your strategy accordingly. Since all check engine code has its retain level of severity, it is laborious to predict how copious miles you can commute with the warning light on. It could be anything from a bad sensor to plug wires needing to be replaced.

Check Engine Light Service Audi A4

What do you do when you’re driving along in your Audi A4 and suddenly, a yellow light illuminates on your dash and says "Check Engine". If you’re like most Audi 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 car over to the side of the road and call a tow truck, but it is recommended that you get your Audi A4 checked as soon as possible. Ignoring that warning could end up causing major damage to expensive engine components.

When your Audi A4'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 typically 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 scan tool that is used by our Audi auto repair mechanics at Audi Creve Coeur. There are also a number of relatively inexpensive code readers that are designed for do-it-yourselfers, should you choose 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 issue and repair it.

What Does the Check Engine Light Mean?

One of the most commonly misunderstood lights or indicators in your Audi A4 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 Audi A4. 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 variety of different things. It can be as simple as your gas cap being loose or as serious as engine knocking. If your check engine light is on in your Audi A4, contact Audi Creve Coeur. Our Audi service department can help you find out what code is turning your check engine light on or inspect why your check engine light is flashing. Contact Audi Creve Coeur today!

Audi A4 Check Engine Light

If the check engine light in your Audi A4 starts flashing, that means that the problem needs urgent attention and your Audi should be brought in instantly. A flashing light indicates that the problem is relentless and if not taken care of instantly may result in major damage to the vehicle. This blinking light usually 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 expensive repair. Some owners ask if spark plugs cause the check engine light to flash? This can absolutely be the cause. A bad, old 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 remarkably expensive repair. If your check engine light is flashing, please contact our squad of automotive experts at Audi Creve Coeur immediately by calling 3145824659.

Is it safe to drive your Audi A4 with the check engine light on?

If the check engine light is shining, this means that there is a relentless issue and it is recommended to service your Audi A4 expeditiously. This question is not very authentic because it each 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 typically indicated by a dependable glow of the check engine light. If you notice a variety in the performance of the vehicle, it could be an indication of a more relentless problem. Call the advisors at Audi Creve Coeur by dialing 3145824659 so you can describe the issues. Or lower your speed and bring your Audi to our certified mechanics as soon as conceivable.

Audi A4 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 several common causes including something as simple as a loose gas cap. Other common reasons for a Check Engine Light are faulty emissions control part, damaged oxygen sensor, faulty head gasket, dirty mass airflow 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 Audi 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 Audi issue was fixed.

Every Audi A4 was designed with a high-technology performance monitoring system with a computer, and a series of sensors positioned strategically throughout the vehicle on its crucial 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 wrong nor what to do about it. That’s where we come in; Audi Creve Coeur 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 Audi A4?

When your check engine light comes on, this could be as simple as tightening or replacing your gas cap. Likewise, the check engine light could also be a warning of a serious problem that could cause serious damage to your engine and come with a hefty repair bill. Depending on your make and model, the check engine light will illuminate or blink. A steady glow typically means something less serious but a flashing check engine light indicates that your vehicle’s engine is in serious trouble and service is needed immediately. If your check engine light is flashing in your Audi A4, we highly recommend not to drive the vehicle and schedule Audi service today. Below is a list of the most common reasons your check engine light can come on:

  • Issues with any aftermarket items. An aftermarket alarm, exhaust or alternative item can wreak havoc on your Audi A4 if it’s not installed properly. These aftermarket parts and accessories can deposit the battery, trigger the check engine light, or even avoid the vehicle from starting. If these issues sound cognizant, bring your A4 to Audi and have our team of certified mechanics ensure that your aftermarket items were installed correctly and aren't causing any issue. Getting accessories, extraordinarily aftermarket parts and accessories, or using OEM parts first place might cost a scant bit more but could save you money from having to get poor work and damage caused by poor installation work corrected.
  • Your Audi A4 has a vacuum leak. Each Audi A4 has a vacuum system that performs a expansive array of functions. The vacuum system also 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 dehydrated out and crack, extraordinarily if they’re exposed to impressive heat or extreme brisk.
  • The battery is low or dead. The battery in your Audi A4 is each big. 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 many decades ago, and they don't really require maintenance. The price of a new one depends on the type of Audi you drive, but check our present service coupons and specials.
  • 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 Audi A4's spark plugs. The O2 sensor sends data to the vehicle’s onboard computer to indicate the noble assortment 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 mandatory for your Audi A4. The spark plugs are the part of your engine that ignites the air/fuel assortment in the combustion chamber of your vehicle. This explosion is what moves the pistons and makes the engine run. The spark plug wires bring the spark from the ignition coil to the spark plugs. If you're spark plugs or spark plug wires are bad or departed, 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, exceptional to more expensive repairs.
  • Your mass airflow sensor (known as MAF) needs to be replaced. The mass airflow sensor in your Audi A4 is what determines how much fuel is mandatory 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 hopeful changes, like altitude. If your Audi A4 is having trouble starting, idling rough or has a sudden change in the position of the throttle pedal, this could be a sign of a bad mass airflow sensor.
  • One of the most typical and frequent cause is that your Audi A4 gas cap is loose, damaged or missing. The gas cap for your Audi A4 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 departed 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 suddenly after you put gas in your Audi A4, 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.
  • 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 faster and your vehicle will be less forceful when it comes to fuel economy.
  • Your catalytic converter is bad or going bad. The catalytic converter is a part of your Audi A4’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 frequently caused by neglected maintenance, which is why Audi Creve Coeur offers a complimentary multi-point inspection with each Audi service. If you have an issue with your catalytic converter and don't get it repaired, your Audi A4 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 alternative problems from overheating.

Will the check engine light reset itself?

The check engine light on your Audi A4 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 Audi A4 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 Audi Creve Coeur so the light and code can be double-checked and reset.

Audi A4 Check Engine Light Codes

The check engine light turning on can be quite intimidating to see that little light on your vehicle’s dashboard suddenly 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 A4. There are hundreds of different codes that your check engine light can represent. While that sounds daunting, with a little patience, tackling basic diagnostics will give you useful knowledge about your vehicle and will also allow that Check Engine Light to do what it is really supposed to do: be your guide. Unfortunately, obvious and helpful vehicle symptoms do not always accompany an illuminated Check Engine Light. Since there are hundreds of possible OBD codes, there are also hundreds of possible reasons for the light, including:

  • Old Battery
  • Computer output circuit issues
  • Loose Gas Cap or Missing Gas Cap
  • Ignition system faults
  • Fuel and air metering systems problems
  • O2 Sensor
  • Bad Spark Plugs
  • Transmission issues
  • Emissions controls issues
This is why it is important for someone who does not have a lot of automotive knowledge to not assume what a code means. Call Audi Creve Coeur at 3145824659 expeditiously or schedule your check engine light service online today! If the engine light comes on due to a relentless concern, you risk damaging your car further by not repairing the issue proper away. When your check engine light comes on, you should get it checked out quickly by a certified Audi mechanic.