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Forum > General Smog Check > Question

How many OBDII monitors have to be on ready status?

Does California allow any number of codes to be in a "Not ready" or "Not Complete" state? For instance, can you pass smog if the majority of codes are ready, except for one? Is there any margine of leniency or do ALL codes have to be ready? I appreciate your time.
Answer:

The Bureau of Automotive Repairs has reduced the number of allowable incomplete OBD II readiness monitors for both the new BAR-OIS (for 2000 & newer vehicles) and the BAR-97 (1999 & older) smog inspections systems. The new criteria is as follows: Gasoline vehicles: - 1996-1999 model year vehicles will be allowed one incomplete readiness/emission monitor - 2000 and newer model year vehicles will need all emission monitors in READY or COMPLETE status, with the exception of the EVAP monitor. AN incomplete evaporative monitor will not cause a smog check failure. It will be the only monitor allowed to be incomplete on a 2000 & newer vehicle. Diesel vehicles: - 1998-2006 model year vehicles are required to have all monitors complete or ready. - 2007 and newer model year vehicles are allowed only an incomplete exhaust after-treatment system monitor (e.g., particulate filter, NOx/SCR treatment, catalyst, etc.) posted by SmogTips Support

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