Operation CHARM: Car repair manuals for everyone.

Description of Drive Cycles

The purpose of the OBD II drive cycle is to execute the OBD II monitors and identify any concerns with the OBD II system. The DTC P1000 code will be erased of all OBD II monitors have completed during the OBD II drive cycle.

WARNING: STRICT OBSERVANCE OF POSTED SPEED LIMITS AND ATTENTION TO DRIVING CONDITIONS ARE MANDATORY WHEN PROCEEDING THROUGH THE FOLLOWING DRIVE CYCLES.

The scan tool will be used to observe the status of each OBD II monitor at the completion of the OBD II drive cycle. The completion status of the Exhaust Gas Recirculation (EGR), Heated Oxygen Sensor (HO2S), evaporative emission (EVAP), Secondary Air Injection (AIR) (if applicable) and catalyst efficiency monitors can be monitored during the OBD II drive cycle by viewing the On-Board Readiness Menu on the scan tool.