Check Engine - 1994 Codes
Here are the codes I get when I hook-up the paper clip on pin 4 & 12 on the 16 pin ALDL connector.
1. C25, H25, ---
4. H29, H43, H63, ---
9. ---
A. ---
The table I have does not show any definition for H29, nor does it differentiate between Cxx and Hxx codes.

Can someone help me out with the definitions?
The car has 95,000 miles on it and I don't know what service has been done on the car before. I just got it about one month ago.
I am pretty good with the wrenches and busted knuckes. Are these things easily repairable at home or would it be best to take it in to the dealership?
Your help and comments are appreciated.
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