Normally when the computer throws a code for that, it is because the lift
sensor in the EGR valve doesn't sense the valve opening. Could be a busted
diaphragm (check with a vacuum gauge) or a bad sensor in the valve, or a bad
vacuum control system causing the valve to never open. Usually if you have
EGR port problems the computer thinks everything is working fine.



"Adam" <PballwakeguitarL@Yahoo.com> wrote in message
news:d74bb4e2.0406072053.b1449ed@posting.google.co m...
> I have a 92 accord (auto) 155,000 miles on it and when I do a
> diagnostics test on it I am get an error 12 which is an EGR Error. I
> need someone to dump all the info about "EGR problems" they know on
> me. I need to understand what they are and how I clean them out.
> Could an acutal hole in the muffler be the problem? I have heard that
> there are EGR Ports. Where do I find those?
>
> Thanks
> Adam