So I bought it my car to have an intermittent CEL on an '07 IS350 get checked out. I knew it was a P0430 code and they tech at Lexus said they'll replace the cat but in the job description, there was a P0606 code. I did some searching but what exactly does this code mean? Thanks!

 

that is a computer malfunction code... hopefully it was random and doesn't come back... generally means replacing the ecu