My Odyssey has a CEL of P0430. Code says "Catalyst System Efficiency Below Threshold Bank 2". My question how do I fix this? Could it be the catalytic converter? or the o2 sensor? and which o2 sensor? Thanks guys

 

P0430 will most likely be due to a bad cat. It is not like older cars where it can be due to the O2 sensors.

P0430 is related to Bank 2 (which is the front cat).

 

Do you or anyone know of a good site to purchase a new cat?

 

The check engine light is off but the obd2 scanner shows that code still, should I delete it and see if it comes back on? I forgot to mention that I crouched under the car and the cat was off one of the rubber hangers. Could being off one of the hangers effect the cat causing the o2 sensor wiring to stretch making the cel go off? I also put 89 in the van, I hear that some people say that the fuel could be effecting it, is that possilbe? I dont want to buy 3 (it takes 3) cats on this damn van. lol