John wrote:

> (Getting the codes out of the computer sounds fun but time is short... if
> anyone recommends any aftermarket hacks for accessing the computer I'd be
> interested...)

Getting the codes is easy. See
http://www.honda.co.uk/owner/civicmanual/pdf/11-14.pdf for instructions.
This link refers to the service manual for the European market, but the
section about reading out the codes applies to the US model as well.

To find the service check connector, open the passenger door. Right in
front of the door jam, about the height where the carpet ends, you will
see the top of the ECU. The service check connector is tucked up above
the ECU, usually taped to the wire harness with blue tape. You do not
need the "SCS Short connector 07PAZ-0010100", a paper clip bent into a
U-shape will do just fine.