Guys, According to Gregory Repairs Manual for VT-VZ these codes means: P0420 Catalyst operating efficiency below threshold bank 1 P2098 Post catalyst fuel trim too lean bank 2 I know P0420 is a code for bad cat converter but P2098???? :hmmm: :hmmm: :hmmm: Can anyone please enlighten me in this P2098 code? In my language it means "post-cat o2 sensor in bank 2 senses lean condition". How could a catalytic converter runs lean????? Fuel trim???? :hmmm: :hmmm: :hmmm: :idea3: Also please advise if it is possible to disable the post-cat o2 sensors reading permanently? Will it cause mechanical damage to the engine? Pros and cons?? Thanks guys.