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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (2.9L Pcm 2 - DTCS P2240-00 To U143B-00) >> DTC Troubleshooting >> P2254-00-O2 Sensor 2-1 Negative Current Control Circuit-Open >> Possible Causes

Possible Causes

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Possible Causes
O2 2/1 SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
O2 SENSOR 2/1
POWERTRAIN CONTROL MODULE 2 (PCM-2)

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

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