P0073

Test 1 - 2:

Test 3 - 6:

SYMPTOM
P0073-AMBIENT TEMP SENSOR HIGH

WHEN MONITORED
The ignition key on.

Set Condition
The Ambient Temperature Sensor voltage is greater than 4.9 volts. One Trip Fault.

POSSIBLE CAUSES
- Ambient air temperature sensor voltage above 4.9 volts (K145)
- AAT signal circuit shorted to battery voltage
- Ambient air temperature sensor internal failure
- (K145) AAT signal circuit open
- (K4) sensor ground circuit open
- PCM