System reaction to a fault:

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

A substitute value is calculated continuously as follows: Starting intake air temperature is incremented with 1°C per 60 g air mass/s. The value is maximized to 90 °C and is used as soon as fault criteria for the sensor are fulfilled.