Please wait while the page loads...

Audi S4 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 S4. There are hundreds of disparate codes that your check engine light can represent. While that sounds daunting, with a little patience, tackling essential diagnostics will give you comfortable knowledge about your vehicle and will also allow that Check Engine Light to do what it is absolutely supposed to do: be your guide. Unfortunately, conspicuous and convenient vehicle symptoms do not always accompany an illuminated Check Engine Light. Since there are hundreds of likely OBD codes, there are also hundreds of likely reasons for the light, including:

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

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 immediately by a certified Audi mechanic. Call Audi North Atlanta at 7706189076 today or schedule your check engine light service online today! If the engine light comes on due to a draconian concern, you risk damaging your automobile further by not repairing the issue right away.

What could cause the check engine light to come on in a Audi S4?

When your check engine light comes on, this could be as authentic as tightening or replacing your gas cap. Likewise, the check engine light could also be a warning of a hazardous problem that could cause hazardous break to your engine and come with a broad repair bill. Depending on your make and model, the check engine light will illuminate or blink. A steady glow typically means something fewer hazardous but a flashing check engine light indicates that your vehicle’s engine is in hazardous trouble and service is needed immediately. If your check engine light is flashing in your Audi S4, we very advise not to drive the vehicle and schedule Audi service today. Below is a list of the most receptive reasons your check engine light can come on:

  • New Spark Plugs or Plug Wires are fundamental for your Audi S4. 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 transport the spark from the ignition coil to the spark plugs. If your spark plugs or spark plug wires are destructive or old, you will experience low 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.
  • One of the most commonplace and frequent cause is that your Audi S4 gas cap is loose, damaged or missing. The gas cap for your Audi S4 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 destructive 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 quickly after you put gas in your Audi S4, 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 diverse item can wreak havoc on your Audi S4 if it’s not installed correctly. These aftermarket parts and accessories can dump the battery, trigger the check engine light, or even prevent the vehicle from starting. If these issues sound commonplace, transport your S4 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, exceedingly aftermarket parts and accessories, or using OEM parts first place might cost a little bit more but could save you money from having to get low perform and damage caused by low installation perform corrected.
  • The battery is low or dead. The battery in your Audi S4 is every positive. 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 countless 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 extant service coupons and specials.
  • Your mass airflow sensor (known as MAF) needs to be replaced. The mass airflow sensor in your Audi S4 is what determines how much fuel is fundamental to run your engine efficiently by measuring the fee of air entering the engine. As a part of the engine management system, the mass airflow sensor helps adjust to peculiar changes, like altitude. If your Audi S4 is having trouble starting, idling rough or has a swift change in the position of the throttle pedal, this could be a sign of a destructive mass airflow sensor.
  • Your catalytic converter is destructive or going destructive. The catalytic converter is a part of your Audi S4’s exhaust system. The catalytic converter's work 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 Audi North Atlanta offers a complimentary multi-point inspection with every Audi service. If you have an issue with your catalytic converter and don't get it repaired, your Audi S4 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 diverse problems from overheating.
  • Your Audi S4 has a vacuum leak. Every Audi S4 has a vacuum system that performs a wide fluctuate of functions. The vacuum system also helps lower destructive 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, exceedingly if they’re exposed to intense heat or extreme chilly.
  • Your O2 Sensor (Oxygen Sensor) needs to be replaced. The Oxygen sensor, noted as the O2 sensor, measures the fee of oxygen in your exhaust system. If there is excess oxygen in your exhaust system, fuel burns faster and your vehicle will be less direct 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 Audi S4's spark plugs. The O2 sensor sends data to the vehicle’s onboard computer to opt for the right mixture of air and fuel that enters the cylinders in your engine. A destructive O2 sensor can also cause a vehicle to fail an emissions test.

Check Engine Light Service Audi S4

What do you do when you’re driving along in your Audi S4 and suddenly, a yellow light illuminates on your dash and says "Check Engine". If you’re like most Audi owners, your heart sinks a microscopic because you have microscopic 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 S4 checked as soon as likely. Ignoring that warning could end up causing notorious damage to expensive engine components.

When your Audi S4's ECM (electronic control module), which is the vehicle's onboard computer, finds a problem in the mechanical control system that it can’t honorable, 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 technicians at Audi North Atlanta. 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 gifted to pick the issue and repair it.

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. It could be anything from a intrusive sensor to plug wires needing to be replenished. Since each check engine code has its own level of severity, it is hard to predict how many miles you can drive with the warning light on. If you check engine light is blinking, we recommend that you pull over and contact Audi North Atlanta to help opt for if your car is safe to drive in or if we recommend a tow truck.

Will the check engine light reset itself?

The check engine light on your Audi S4 will often 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 logical, 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 S4 light will go off after about 20-40 miles. If you drive over that payment and the light is still on, you will need to bring it in to Audi North Atlanta so the light and code can be double-checked and reset.

Audi S4 Check Engine Light Flashing

Although there are bountiful possible causes of an illuminated Check Engine Light, we know from years of providing Check Engine Light Diagnosis Service that there are plentiful convenient causes including something as real as a loose gas cap. Disparate convenient reasons for a Check Engine Light are damaged oxygen sensor, dirty mass airflow sensor, faulty emissions control part, faulty head gasket, 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 Mechanics and the certified service protocol to isolate the root problem and repair it as essential 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 S4 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 mechanical control unit. If the mechanical 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 strictly is wrong nor what to do about it. That’s where we come in; Audi North Atlanta 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 average cost for a check engine light diagnosis & testing is typically between $88 and $111. The astonishing news, Audi North Atlanta offers complimentary multi-point inspections and free diagnostics, in most cases, to aid favor the cause of your check engine light. The check engine light warns of issues ranging from a gas cap that's not properly tightened to a more hazardous failure like a bad catalytic converter or a problem with one of the car's oxygen sensors, so it astonishing to get the polite code reading and diagnosis.

Is it safe to drive your Audi S4 with the check engine light on?

This question is not very peculiar 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 continuously indicated by a consistent 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 efficient problem. If the check engine light is flashing, this means that there is a efficient issue and it is recommended to service your Audi S4 instantly. Call the experts at Audi North Atlanta by dialing 7706189076 so you can describe the issues. Or reduce your speed and bring your Audi to our certified mechanics as soon as practical.

What Does the Check Engine Light Mean?

One of the most naturally misunderstood lights or indicators in your Audi S4 is the check engine light. The check engine light is part of the onboard diagnostics system, and displays in a few divergent ways. It can say "Check Engine", it can be a symbol of an engine, it can even be a combination of both. This light lights up 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 S4. Some of these include ignition timing, controlling engine speed, shifting automatic transmissions and implementing stability control, just to name a few. With that being said, the check engine light can advise a variety of distinctive things. It can be as easy as your gas cap being loose or as dangerous as engine knocking. If your check engine light is on in your Audi S4, contact Audi North Atlanta. Contact Audi North Atlanta today! Our Audi service department can help you read what code is turning your check engine light on or diagnose why your check engine light is flashing.

Audi S4 Check Engine Light

If the check engine light in your Audi S4 starts flashing, that means that the problem needs immediate attention and your Audi should be brought in hastily. A flashing light indicates that the problem is perilous and if not taken care of hastily may result in difficult break to the vehicle. This blinking light frequently indicates a relentless engine misfire allowing unburned fuel to be ditched into the exhaust system. There it can instantly surge 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 strictly 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 veterans at Audi North Atlanta instantly by calling 7706189076. 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 exceedingly expensive repair.