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Chrysler
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2023
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300 C
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Repair and Diagnosis
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Engine Performance
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System
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6.4L - DTCS P0645 To P1621
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DTC Troubleshooting
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P0685 ASD / Main Control Circuit
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Set Condition
Set Condition
The Powertrain Control Module (PCM) detects and open or short in the ASD Relay control circuitry.