Driving Pattern
- Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on.
- Drive the vehicle at a speed between 25 - 55 mph (40 - 88 km/h) for at least 10 minutes to warm up the engine and the NOx adsorptive TWC.
- Drive the vehicle at a speed between 20 - 60 mph (32 - 96 km/h) for at least 72 seconds.
- Then, drive at a steady speed of 25 mph (40 km/h) or more in the lean burn running mode for at least 2 minutes.
- If the NOx adsorptive TWC is contaminated by sulfur in the gasoline, the detection may be incorrect. If the detection is not complete in the first driving cycle, retest after driving with the engine in a richer running mode (for 10 minutes) to counteract the effects of the sulfur.
- If you have difficulty duplicating the DTC, retest after turning off electrical components such as the audio system and A/C, and try a different gear position.
- Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.