When Monitored
WARNING: This page is about a different variant/trim than selected.
This diagnostic runs continuously when the following conditions are met:
- The PCM runs this monitor after every Diesel Exhaust Fluid (DEF) refill event.
- NOx Sensors are active.
- Ambient temperature exceeding -7.0°C (19.4°F).
- Altitude is lower than 6, 800 feet.
- Vehicle has been driven at steady highway speeds for a sufficient amount of time.