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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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P2244-00-Upstream O2 Sensor Reference Voltage Performance (Bank 1 Sensor 1)
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Set Condition
Set Condition
The Powertrain Control Module (PCM) detects the internal reference voltage of the O2 Sensor chip (AISIC) is out of range.