When Monitored
WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic runs continuously when the following conditions are met:
- Engine running after a cold start and the difference between ECT and AAT is less than 10°C (19°F).
- Fuel Level between 12% and 88%.
- Manifold vacuum greater than a calculated minimum value.
- Ambient temperature between 4°C and 35°C (40°F and 95°F).