My S70 required a repair in order to pass a smog check in CA this year. The repair is done, but the monitors all went into an unready state as a result of the repair. After 3 months and 100s of miles of driving, one of the monitors (the catalytic converter I believe, which was never the problem to begin with) refuses to register as ready.

Does anyone here have any idea what the procedure is to get these monitors into a ready state? Everyone just keeps telling me to "drive a few more hundred miles", which is getting ridiculous. I've already pumped more emissions into the air trying to get this monitor to reset than I would have pumped out in a year of ordinary driving. I don't ordinarily even drive this car all that much anymore.