Which catalytic converter would be considered bank 1 on 96 4.0?

[porshapower]

Getting a PO420 code and want to check converter. Which one is bank 1 converter? How many converters are under there? THanks Nel

 

[jimbo74]

thats on 02 sensor code... and bank 1 is passenger side.....

 

[porshapower]

Description of code "catalyst efficiency below threshold"

Thought o2 sensors had their own codes?

 

[jimbo74]

Thought o2 sensors had their own codes?

o2 senosros do have their own codes however its usually associted to check the 02 sensores when that code throws because more often then not there is a problem with the 02 and not the actual cat