I'm in need of some help. I live in California and I bought a 07 Impreza 2.5i (non turbo) about 2 years ago. After my first smog check the car's check engine and cruise control light came on. The cars performance has not changed or the gas mileage so I didn't pay attention to it. Now is time for another smog check and the car wont pass with the check engine light on (I tried reseting but the computer but OBDII picked up on it. too old of a trick). Well now I need to fix the problem but the emissions passed so I'm not sure whats going on. The computer is saying I need a new catalytic converter.
Does anyone have any expirience with this problem? if so SHould I replace or clean the O2 sensors first and see what happens? should I use OEM or after market is fine for 02 sensors or catalytic converter?
I want to be inform since I dont have any expirience with this problem.
Thank you for your time