[Rick Lee]

I have a reader I got on eBay for around $75 and it's been a great tool. The manual that came with it has a list of a lot of generic codes, which can point you in the right direction if you don't have a list of your vehicle-specific codes. But you can just find it on the Internet somewhere. Clearing your codes can get you through emissions inspection, IF you also have your readiness codes reset and that can be tricky. I'd definitely want a code reader that shows readiness codes. In my own case, I got my readiness codes reset, drove straight to emissions inspection, passed and then the CEL came on a week later. So I did it just in time. My 993 runs like a champ and I have no idea why the computer says the right bank is lean. I just replaced all four O2 sensors (ouch), ran some LubroMoly through and the car runs perfectly.