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Home >> Chrysler >> 2025 >> Pacifica Select, FWD >> Repair and Diagnosis >> Engine Performance >> System >> 3.6L - DTCS P0645 To P0784 >> DTC Troubleshooting >> P0685 ASD/Main Control Circuit >> Possible Causes
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Possible Causes

Possible Causes
ASD RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE
ASD RELAY CONTROL CIRCUIT SHORTED TO GROUND
ASD RELAY CONTROL CIRCUIT OPEN
ASD RELAY
POWER DISTRIBUTION CENTER (PDC)
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to:  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .