P0072

Test 1 - 3:

Test 4 - 5:

SYMPTOM
P0072 - AMBIENT TEMP SENSOR LOW

WHEN MONITORED
The ignition key on.

SET CONDITION
Ambient Temperature Sensor is less than 0.098 of a volt at the PCM for 3 seconds.

POSSIBLE CAUSES
- AAT sensor voltage below 0.3 of a volt
- AAT sensor
- (G31) AAT signal circuit shorted to ground
- (G31) ATT signal circuit shorted to the (K4) sensor ground circuit
- PCM