Many 03 Accords had radio's replaced with repaired units because of an
extremely common failure of the display panel. You may be
using the code from the original radio rather than the replacement
radio. Unless you have owned the car since new, search for new
code tags which may be mixed in with your docs. Also try searching the
glove box for a code. Otherwise I think
you need to pull the radio to get it's serial number and then the
dealer can give you the code.
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