Your rear O2 sensor is bad. They have a heater element, and yours is having trouble. Replace the O2 sensor, or disable the DTC.
You can pass catless...IF they forget to look. Here, all it is is an OBD2 check, and a gas cap check for anything newer than a 99. It just all depends on how exactly they do the inspections
By chance, would turning off the code have any effect on the monitor being ready?Definitely depends on where you live.. if they put the car on a dyno with a I/M240 or ASM 4-Gas analyzer test you'll definitely fail, whether they look or not.
By chance, would turning off the code have any effect on the monitor being ready?