My Service Engine Soon Light comes on after about 10 minutes of driving at highway speeds. Car runs fine, but curiosity led me to try and check it out.
I used a jumper in the OBD connector and got 2 codes H74 and H32.
I cannot find either code in my Service Manual, but a search on line showed 32 as an EGR System Failure. ( I installed a new gas cap but still get the warning)
But there is nothing for 74.
So does anyone out there have a comprehensive list of the error codes and any ideas as to how to correct the situation? or is it the dreaded visit to the shop with my wallet out!
The vette is a 1991, base 5.7L
I used a jumper in the OBD connector and got 2 codes H74 and H32.
I cannot find either code in my Service Manual, but a search on line showed 32 as an EGR System Failure. ( I installed a new gas cap but still get the warning)
But there is nothing for 74.
So does anyone out there have a comprehensive list of the error codes and any ideas as to how to correct the situation? or is it the dreaded visit to the shop with my wallet out!
The vette is a 1991, base 5.7L