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Dodge and Ram
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2023
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ProMaster 2500
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Repair and Diagnosis
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Engine Performance
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Testing & Diagnosis
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3.6L - DTCS P105B To P1628
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DTC Troubleshooting
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P1129-Closed Loop Fueling Not Achieved - Bank 2
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Set Condition
Set Condition
Once the enable time has been reached and all enable conditions are met, the diagnostic will check for closed loop fuel control. If closed loop control is not active by the time the enable timer has expired, the diagnostic will fail.