Vw jetta

2002 vw jetta; MAL light is on and computer readout BB faulty catalytic converter probably cause BB1 Rich Air/Fuel Ratio BB2 Air leak near rear HO2S BB3 Faulty Fuel conrol HO2S. What does this mean??

I’m guessing it means the engine is running rich (too much fuel), which is effecting the operation of the catalytic converter. Bad oxygen sensors can cause this.

HO2S means Heated Oxygen Sensor.