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Dodge and Ram
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2021
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Challenger SRT Hellcat, Automatic Trans
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Repair and Diagnosis
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Engine Performance
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System
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6.2L - DTCS P2246 To U0121
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DTC Troubleshooting
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P2255-O2 Sensor 2/1 Negative Current Control Circuit Low
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When Monitored
When Monitored
This diagnostic runs when the following conditions are met:
With the ignition on
The O2 Sensor 2/1 at operating temperature
The pump cell active