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Home >> Alfa Romeo >> 2017 >> Giulia Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - DTCS P2237-00 To P2AE1-00 >> DTC Troubleshooting >> P2271-00-O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 2 >> Possible Causes

Possible Causes

Possible Causes
EXHAUST LEAK
O2 SENSOR 1/2 WIRING HARNESS CONNECTOR DAMAGE
OXYGEN SENSOR 1/2

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

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