First of all, I have already tried 2 different cleaning discs, and inserted them at least 20 times each.

I have a Buick cd player with tape deck in my car that keeps giving error 20 whenever I put a disc in. I can hear it working in there, and a little clicking sound, but then after about 15 seconds, it spits it back out and shows error 20. Buick dealership said that code means the lens is dirty. Is there some other way to clean the lens? Anybody else ever have this problem? I bought the cd player off ebay (mistake #1) and that guy still claims it worked perfectly when he took it out. Let me know if you have any ideas.

Thanks

Try a can of clean compressed air (computer service type), if not you will need to pull the unit out so you can take it apart and clean it.

PontiacDad is right.. the only good cleaning method is to actually take it apart. But not a lot of people have the patience to do that.. ( I am one of those people )

When you use any spray ( compressed air even ) Let it sit bout 4~5min. to ensure that it has time to dry any humidity it may have been pushed in there to see if it will read the disk