SES light came on for about 2 minutes, then went out. The car ran fine the entire time the light came on, this leads me to believe that it may be an 02 sensor, but not for sure.

On the 94Z, can I use a jumper across 2 pins on the DLC or does it have to be scanned.

If a jumper can be used to retrieve codes, which pins do I jump ?

Note: I bought the car with 24K, it now has 94K. The 02 sensor on the Header has been replaced (around 55K) but not the one on the y-pipe. Would you recomend changing both 02s anyway?

Thanks in advance.