OBD-II Drive Cycles

Manufacturer defines drive cycle as a pattern of driving that meets code set criteria for PCM to monitor a particular system/component. Drive cycle is used to verify repair by reproducing conditions during which fault occurred. There are 6 different drive cycles. These are: Catalytic Converter Monitor, Evaporative (EVAP) Emission Control System Leak Monitor, Heated Oxygen Sensor (HO2S) Monitor, EGR Monitor, Fuel Trim Monitor and Other Monitor. For the requirements to run a drive cycle, see appropriate drive cycle in OBD-II DRIVE CYCLES  . Drive cycle cannot be performed if outside air temperature is less than 14°F (-10°C).