I have the same problem after installing new clutch and flywheel, i aslo have a 2003 is300 5spd, i pulled the codes there was two one was P0430 and the was the same except it had a "pd" next to it? i'm hoping it is just a loose connection when i removed/installed exhaust? i did a search of P0430 but came up with nothing? is there a thread with CEL Codes?
Thanks in advance for the help.
-Arnold.