Check Engine Light

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

If your vehicle's check engine light comes on, the problem might be as easy or very complex. It could be something minor like replacing or tightening the gas cap. But the check engine light could be a warning of a major problem that could result in significant damage to your engine and an expensive repair. The following is a list of the most common causes of the check engine light coming on in your vehicle:

• The battery is low.
• If the gas cap on your Audi is loose, damaged, or missing altogether, this could be one of the most recent and widespread causes. There are a few different things that can be done with the gas cap on your Audi. In addition to securing the fuel system and assisting in the upkeep of fuel tank pressure, it also helps to prevent the escape of exhaust fumes when the vehicle is not in motion. If your check engine light turns on immediately after you put gas in your Audi, you should check is to make positive the cap isn't loose - that would be an easy fix.
• Your Audi needs new Spark Plugs or Plug Wires. The spark plugs (though not an overly expensive item) make the engine run.  Worn spark plugs and plug wires can cause clogged catalytic converter or break to ignition coils and O2 sensors, dominant to more expensive repairs.
• The mass airflow sensor (MAF) needs to be replaced. The mass airflow sensor in your Audi determines how much fuel is needed to run your engine efficiently by measuring the amount of air entering the engine.
• Your O2 Sensor (Oxygen Sensor) needs to be replaced. This tool measures the amount of oxygen in your exhaust system. Excess oxygen in your exhaust system, means the fuel burns faster and your fuel usage will be less efficient. This might not be cause for alarm, but more serious than a faulty sensor can break your catalytic converter, which would be very costly to repair.
• Your catalytic converter is damaged or has gone bad. The catalytic converter is a part of your Audi 's exhaust system. The catalytic converter's job is to turn carbon monoxide into carbon dioxide. A damaged catalytic converter is ordinarily caused by neglected maintenance, which is why we  Audi South Atlanta offers a complimentary multi-point inspection with every Audi service. 
• There's a vacuum leak in your Audi. Every Audi is equipped with a vacuum system that is capable of performing an extensive variety of tasks. By routing the fumes created when gasoline evaporates through the engine, the vacuum system also contributes to the reduction of harmful emissions. Vacuum hoses have a greater propensity to crack and dry out over time if they are subjected to significant amounts of heat or cold.
• You had aftermarket items installed on your Audi. We aren't saying that you can't install aftermarket items but be careful WHO is doing the installation. An aftermarket alarm, exhaust or back-up item can have a disastrous effect on your Audi if it's not installed correctly. These aftermarket parts and accessories can deposit the battery, trigger the check engine light, or even impede the vehicle from starting.

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

The average estimate for a check engine light diagnosis & testing is $180. The check engine light warns of issues ranging from a gas cap that's not perfectly tightened to a more actual failure like a bad catalytic converter or a problem with one of the car's oxygen sensors, so it convenient to get the convenient code reading and diagnosis.

Audi South 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 Highly Qualified Service professional.