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Dodge and Ram
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2021
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ProMaster City Base
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Repair and Diagnosis
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Engine Performance
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System
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2.4L - DTCS P2239 To U1504
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DTC Troubleshooting
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P2628-O2 Sensor 1/1 Pump Cell Current Trim Circuit High
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When Monitored
When Monitored
This diagnostic runs when the following conditions are met
With the ignition on
The O2 Sensor 1/1 at operating temperature
The pump cell active