Profile Topics Started Replies Created Engagements Favorites Search replies: Forum Replies CreatedViewing 1 replies (of 1 total)AuthorReplies August 13, 2016 at 6:13 am in reply to: P0420: bad pre-cat or the main catalytic converter #865336 Kedar PatwardhanParticipantThanks Rob. I will pass buying the exhaust gas analyzer 🙂 But I will report back on the O2 sensor fluctuation (pre cat and post cat). Thanks again !AuthorRepliesViewing 1 replies (of 1 total)