On-Board System Readiness (OSR) Test: Description

All on board diagnostics (OBD) scan tools display the OSR test. The OSR displays the supported monitors on the vehicle and the status of all monitors (complete or not complete) at that time. Fuel, misfire, and comprehensive component monitors run continuously and always display YES status. Only clearing the diagnostic trouble codes (DTCs) from the powertrain control module (PCM) or resetting the keep alive memory (KAM) causes the non-continuous monitors to change to a NO status. The transaxle control module (TCM) does not display any OSR test results.

A detailed description of completing the OBD monitors is found in ON BOARD DIAGNOSTIC (OBD) DRIVE CYCLE .