Conditions for Setting the DTC

P0071 

The difference between the following parameters is greater than a predefined value: Ambient Air Temperature Sensor Signal & Air Conditioning High Side Pressure Switch Signal = Greater than 25°C (77°F)

P0072 

Ambient Air Temperature Sensor Signal = Greater than 88°C (190°F)

P0073 

Ambient Air Temperature Sensor Signal = Less than -40°C (-40°F)

P0074 

Ambient Air Temperature Sensor Signal = Intermittent