The Bureau of Automotive Repair has issued an update to the Smog Check OBD Reference Guide. The update
includes new service bulletins, emissions recalls and information on the following vehicles:
- BMW 323i: ECM reflash recall is needed to set oxygen sensor monitor.
- 2000-2001 Nissan Maxima and Infinity I30: New catalyst may be needed to run catalyst monitor.
- 2001 Chevrolet Silverado and Tahoe C/K 1500: Send to BAR Referee only if secondary air monitor is not running.
- 2002 Chevrolet Silverado C/K 2500 HD Diesel: Send to BAR Referee only if EGR monitor is not running.
- 2009 Kia Borrego LX/EX: Send to BAR Referee only if EGR monitor is not running.
- 1999-2006 Nissan UD1200 Box Truck (10-14K GVWR, Federal Diesel): Not equipped with OBD, BAR-OIS skips OBD test.
- 2003 Chrysler PT Cruiser 2.4 liter turbo: Catalyst monitor not running. BAR-OIS allows any one monitor.
- 2001-2002 Chevrolet Cavalier CNG: Catalyst monitor not running. BAR-OIS allows any one monitor to be incomplete.
Click here to view the complete Smog Check OBD Reference Guide.

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In order to comply with California’s anti-tampering laws, and pass the smog inspection, the part numbers on aftermarket catalytic converters that are installed on OBD II vehicles must be approved for the vehicle’s make, model, model year, engine size and