finally took delivery of a new OBD2 scanner and used it on my 2002 SC. I received codes of
P0440, 0441 AND 0446, ALL evap emmision. The dealer had cleared some codes, did not tell me what they were, up they tightened the fuel cap, and I have been doing this at every fill up. But the code came back. No drivalilty problems, just the CIL.

I just cleared the codes and tightened the cap once again, next chance I will check the vac lines to the canister, it I can find them. any other DIY fixes I might check and do?

BTW where is the canister on the SC?

 

Check the lines at the driver's side engine right under the engine shroud. Those tend to come unhooked if the motor mounts are weak. Also I've had a plastic nipple break off on those lines, throwing the same codes.