Re: Why am I getting check engine light w/ error code P0471 after Corsa cat-back exha
I had the same issue with my Corsa catback, I took it to the dealer and they said that the valve was crushed and therefore was setting off the CEL. They repaired it while they waited for another one to come in. They funny thing is that I only got the CEL when it was extremely cold. It took about 2 weeks for them to get the new part in and we had temps from 8 degrees up to 50 degrees in that timeframe. After they replaced it, I haven't had any issues since!