The engine light came on in my 1996 Audi A6. Are there any common problems with this car?

the car has 155,100 miles on it and i know it already needs a new rear end.



i have another car just like it that was purchased for parts from a junk yard, so i have the rear end already.



would the engine light come on because it recignizes that it needs a new rear end, or is it definately a totally different problem?The engine light came on in my 1996 Audi A6. Are there any common problems with this car?If you have an Autozone in your town they will diagnose it for free and believe it or not should have the part you need, I will bet as cold as it is it is most likely a mis fire.