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Alfa Romeo
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2019
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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 P1128-00 To P1E39-00
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DTC Troubleshooting
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P1128-00-Closed Loop Fueling Not Achieved - Bank 1 Upstream
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Set Condition
Set Condition
Closed Loop enable conditions have been met and the O2 Sensor has not been in closed loop control, at least once.