What does it mean if a p420 code under threshold bank 2 shows up in a toyato rav 4?

A P420 code indicates that the catalytic converter's efficiency for bank 2 is below the threshold level, suggesting it may not be functioning properly. This can lead to increased emissions and may affect vehicle performance. Possible causes include a faulty catalytic converter, issues with the oxygen sensors, or exhaust leaks. It's advisable to have the vehicle diagnosed to pinpoint the exact issue and determine the necessary repairs.