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Alfa Romeo
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2020
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Giulia Base, AWD
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Repair and Diagnosis
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Engine Performance
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System
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2.0L - DTCS P2173-00 To P2AC0-00
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DTC Troubleshooting
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P2271-00-O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 2
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Set Condition
Set Condition
If the PCM detects that the O2 Sensor 1/2 is stuck in a rich state for two minutes.