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Home >> Alfa Romeo >> 2017 >> Giulia Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - DTCS P2AE2-00 To U148C-00 >> DTC Troubleshooting >> P2B8C-00-Intake Air O2 Sensor Heater Circuit Bank 1 Sensor 1 >> Possible Causes

Possible Causes

Possible Causes
HIGH RESISTANCE IN THE INTAKE O2 SENSOR HEATER CONTROL CIRCUIT
HIGH RESISTANCE IN THE INTAKE O2 SENSOR HEATER GROUND CIRCUIT
INTAKE O2 SENSOR
POWERTRAIN CONTROL MODULE (PCM)

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

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