Hey, My name is D.A. I recently bought a 2004 from a dealer in Nebraska. The car is beautiful. I drove home to Georgia and it ran fine. I tried to get emmisions test done today. The check engine light will not illuminate on start-up and for that reason the test failed. The tech ran a diagnostic check and it spit out 5 codes: P0412, P0403, P0135, P0155 and P0410. Because the check engine light is blown (or inop for some reason) I didn't know I had any problems before now..... Any advice on where to start would be greatly appreciated. Thanks.