2004 audi a4 engine misfireing its not the coils the plugs are fouled out. Many of these triggers are easy to fix but some will require a trip to your audi dealer.

Common Audi Check Engine Light Causes Maintenance Service Springfield Serving Nixa Mo

On the way home the check engine light came on.

Audi a4 check engine light gas cap. I don t know about a gascap light so i assume you mean check engine light the check engine light indicates that the computer has detected a malfunction in the engine emission control system and has diagnostic codes and data stored which would be essential in diagnosing the problem. My gas cap open light keeps flashing on and off. You can either tighten the cap and wait for the system to reset itself when it determines the problem is fixed or you can use an obd ii code scanner to manually reset the system.

I made the final finance payment for my car over the weekend monday morning i get the tighten gas cap warning for the first time. If your audi check engine light comes on and there are no other symptoms the first thing that you should do is tighten the gas cap. Although an issue with the gas cap or spark plugs may be the simple cause of a check engine light coming on always have a professional diagnostic run by an audi mechanic.

The problem could be emissions related such as a loose gas cap but it can also indicate a serious problem such as a faulty transmission valve body. Hi all im new to this forum and im hoping that this might be the issue yesturday afternoon my check engine light appeared on my 1999 audi a4 1 8t quattro the engine and transmission both run shift smoothly my oil water battery gauges are all. Then later that day solid cel comes on.

A technician with a scanner can access the diagnostic codes and data and then be able to give you a diagnosis. It is important to save time and money by identifying the exact issue and have the appropriate repairs done by someone with experience. I have bought 2 new gas caps from audi closed it until it clicks.

If your gas cap is not properly attached you may see a check engine light or a loose cap warning light on the dash. A4 b5 platform discussion check engine light is it the gas cap. Here s what you need to know about the common causes of an illuminated engine indicator and the steps you should take next.

The gas cap is a part of the vehicle s evaporative emissions system and can cause problems with the system if it has an issue. Step 1 turn off your vehicle s engine. I tightened the gas cap and the warning went away.

An improperly sealing fuel cap may cause an evap system leak which will set off the check engine light when the the computer detects the leak. The most common cause of a check engine light is simply a gas cap that hasn t been tightly replaced. The check engine light can also be set off by a wide variety of other issue so having the computer scanned for trouble codes is highly recommended.

The check engine light is a sure sign that something is amiss with your audi. It s been 2 days and the solid check engine light still has not gone out. The gas cap is now tight and the car seems to be running fine.