It depends on the year. The early 7th gen Accords didn't use Canbus. The later ones did. I'm not sure if it's as clear cut as pre/post facelift. I think some point in the pre-facelift they brought in Canbus (maybe 04-05) but it depends on the year of manufacture on the vin number, not the registration plate.
Fahad knows the answer to this. We were discussing it once in a thread somewhere. Maybe have a search, but use the google search bar. The forum's own search function is naff!