quick quiz

[surewhynot]

Find an easier profession.

 

[Truckin4life]

visual inspection of the cat? Is it there? If so has it been removed or any signs of being messed with?

 

[73F100Shortbed]

Check to see if cats are hollow.

 

[Kevsha]

Bad cat, bank 2

EDIT: I didn't peek at the later posts, i promise, i just clicked replay when i saw it

 

[blacksnapon]

Bad cat, bank 2

EDIT: I didn't peek at the later posts, i promise, i just clicked replay when i saw it

Kevsha got it! The "flatlined" o2 sensor is doing what its supposed to do. The o2s22 is the same as o2s21, thus the cat isn't doing anything. Repair is to replace the cat on bank 2.