Failed emissions after unhooking the battery to clear codes after getting an aftermarket catalytic converter. 'Readiness codes not ready.' This is a new curve here, before you could literally sit in the parking lot and reset your codes w/the OBDII drive in and it would pass

I need to know what the 'drive cycle' is for the '97 Odyessey is and how many it takes to get the Catalyst, O2 Sensor and the EGR system codes ready. Do speed, A/C, on/off, drive time make any difference? Called the Honda dealer, they said "Oh just drive it for a week or so and it should be fine."...

TIA,
Wendy