check ebgine light. i dont get it.
 

Morning ppl. I got in the car this morning, started fine. started driving. I cut the a/c on and then the engine light came on. yet nothing shows on the SID. i got to work. waited about 30min. went to car. started it again. engine light still on. but SID checked ALL OK. does SID display what the problem is or code. or does it not. (mine is a 2001 9-5 Aero)

The SID does not display info on DTC's. Take it to autozone and they'll pull the code for you for free.

0455. i cant find this leak. it comes and goes. my engine light hasnt come on in weeks, from same code. im just blind or something.

as much as I hate referring to other forums...try this: http://tinyurl.com/mkcop2