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Home >> Fiat >> 2014 >> 500 Lounge, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 1.4L - I4 Non-Turbo - DTCS P0016-00 To P0354-00 - 500 & 500C >> Diagnosis And Testing >> P0073-00-Ambient Air Temperature Sensor Circuit High >> Possible Causes

Possible Causes

Possible Causes
AAT SIGNAL CIRCUIT SHORTED TO VOLTAGE
AAT SIGNAL CIRCUIT OPEN
AAT RETURN CIRCUIT OPEN
AMBIENT AIR TEMPERATURE (AAT) SENSOR
BODY CONTROL MODULE (BCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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