Profile Topics Started Replies Created Engagements Favorites Search replies: Forum Replies Created Viewing 1 replies (of 1 total) Author Replies November 30, 2015 at 10:10 pm in reply to: failed CA smog check #845608 Jesus GarciaParticipant The measurement that caused the failure was a high NO number at 15 mph test. The max allow was 426 and the reading was 790. If my catalytic converter was bad wouldn’t have I not passed both the 15 mph and 25 mph test? Author Replies Viewing 1 replies (of 1 total)