Possible causes
– Faulty ambient air temperature sensor
– Ambient air temperature sensor harness is open or shorted
– Ambient air temperature sensor circuit poor electrical connection
– Ambient air temperature sensor harness is open or shorted
– Ambient air temperature sensor circuit poor electrical connection
When is the code detected?
Ambient temperature sensor input voltage is above the minimum acceptable value.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0073 CHRYSLER Description
Ambient Air Temperature (AAT) Circuit High