OBD II Drive Cycle

Method

1. Start the engine from cold. Engine coolant temp must be below 50°C
2. Run the engine at idle for 2½ minutes with as much electrical load as possible i.e. switch on rear demister, aircon etc…
3. Turn off all electrical items, then drive car up to 55mph using only ½ throttle.
4. Hold a steady speed of 55mph for 3 minutes.
5. Slow the car down to 20mph just by letting off the throttle, do not use the brakes, clutch or gears just coast.
6. Accelerate to 55-60mph using ¾ throttle.
7. Hold a steady speed of 55mph for 5 minutes.
8. Slow down again in the same way as step 5.

This drive cycle is valid for most vehicles but each manufacture has their own specific routine which may differ from the above.