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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 2.0L - DTCS B1810-00 To P0111-00 >> DTC Troubleshooting >> P0073-00-Ambient Air Temperature Sensor Circuit "A" High >> Possible Causes

Possible Causes

Possible Causes
AAT SIGNAL CIRCUIT SHORTED TO VOLTAGE
AAT SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
GROUND CIRCUIT OPEN/HIGH RESISTANCE
AMBIENT AIR TEMPERATURE (AAT) SENSOR
BODY CONTROL MODULE (BCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .