Hey everyone,got a question for you all,I have a 1996 coupe with the LT-1,the MIL light keeps coming back on after being erased,the code is catalyst efficiency below thershold (bank 2) could anyone explain this,I have searched all my books and nothing explains it,my guess is a 02 sensor going bad but it reads good on the scanner!

thanks for any info

It is either going to be your 02 or the cat itself.:cheers:

Thanks for the reply,just needed another opion to comfrim!