Santee Smog Test Only has provided STAR Certified emissions testing on Mission Gorge Road in Santee since 2014, handling DMV renewal, change-of-ownership, and out-of-state registration inspections. Pre-sale certification volume on this stretch of Mission Gorge flows partly from Sedano Chevrolet, where used-vehicle inventory requires California smog clearance before title transfer. As a test-only facility, the station performs BAR-mandated visual, functional, and OBD-II inspections but executes no mechanical repairs, ensuring inspection results carry no conflict of interest from in-house repair revenue. Post-collision vehicles returning to the road after structural or drivetrain work at Lloyd's Collision & Paint Center require a passing smog certificate before DMV re-registration, a common workflow on this section of Mission Gorge Road. The OBD-II protocol reads live data from the powertrain control module, checking catalyst efficiency, evaporative system integrity, oxygen sensor response, and misfire monitoring across all engine cylinders.