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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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Testing & Diagnosis
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2.0L - DTCS P2237-00 To P2AE1-00
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DTC Troubleshooting
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P2246-00-O2 Sensor Reference Voltage Circuit High
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Set Condition
Set Condition
The Powertrain Control Module (PCM) detects a high voltage reading on the (K902) O2 Sensor 1/1 Return circuit for 0.016 seconds.