What causes the 'check engine' light to come on in an Audi 80?

My 'check engine' light recently came on in my 2002 Audi 80 and I am unsure of what could be causing it. The car seems to be running fine, but I am concerned about potential issues. Can someone provide some insight into common causes of this light coming on for the Audi 80 model?

The 'check engine' light can come on for a variety of reasons. In some cases, it may be a minor issue such as a loose gas cap or a faulty sensor. It could also indicate a more serious problem with the engine or emissions system. It is always best to have the car scanned for error codes to determine the exact cause. I suggest taking it to a trusted mechanic for further diagnosis and repairs.

A common cause of the 'check engine' light coming on in an Audi 80 is a malfunctioning oxygen sensor. This sensor measures the amount of oxygen in the exhaust system and helps regulate the air-fuel mixture. If it is faulty, it can affect the engine's performance and trigger the light. I advise having the sensor checked and replaced if necessary as it can impact fuel efficiency and emissions.

In some cases, the 'check engine' light will come on due to a problem with the catalytic converter. This component is responsible for converting harmful emissions into less harmful ones. If it is malfunctioning, the car will not pass emissions testing and may have performance issues. If the light is on and the catalytic converter is the culprit, it will likely need to be replaced.