Originally Posted by i_c_the_light
No. 2 black connectors under the steering wheel. Turn key to on position. CEL will flash. Long flash is 10 short flash is 1. 2 long and 1 short = 21. Write down and Google OBD1 Subaru codes.
I checked the code its reading 24 which is an ISC solenoid valve fault.. explains why I almost stalled.. guess I'll be needing to get that checked aswell as my cat, unsure why that light is on and off.. must be a separate problem. thanks for your advice, probably saved me an hour at a mechanic shop for diagnostics!