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Alfa Romeo
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2017
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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 P2237-00 To P2AE1-00
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DTC Troubleshooting
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P2251-00-O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1
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Set Condition
Set Condition
The Powertrain Control Module (PCM) detects an open on the O2 Sensor 1/1 Signal circuit.