Ok, so I come home from the track a few days ago and all is good.

2 Days after, today, I get in the car, and after a few mins, the SES light comes on, and stays on. All seems normal. At a light, I turned off the car, and then restarted, code disappears, when i try to flash it via the short out, 93, ODB1, only code 12, which is normal. Turn on car, no SES, drive for a min, then turns on. If the car sits long, the longer it takes for the code to come on, it seems.

Once i did flash, and it came up with Code 6, or something ending 6. So, What can it be?

 

There are two codes ending in 6 that have to do with the opti. Others are EVAP, refrigerant pressure and Pass-Key.

Count the flashes better next time.

 

Ok, Codes came up today, 21, and 26.

Anyone know what those mean?

Thanks.

 

21 - TPS circuit


27 - EGR vacuum control solenoid circuit

hope that helps

 

DTC-21 = TPS sensor circuit, voltage high

DTC-26 = Quad driver circuit #1.

The "Quad driver" is always a mystery to me on the 93's... they used a seperate "driver" for the high current loads (solenoids) in the 93's, and then incorporated the drivers into the PCM on the 94 and ups. If you assume there is a one-to-one correlation of the 93 codes to the 94/95 codes, DTC 26 would correspond to the EEC canister purge solenoid. But I am not sure if there is such a one-to-one correlation.