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Home >> Jeep >> 2021 >> Compass Sport, FWD >> Repair and Diagnosis >> Engine Performance >> System >> 2.4L - DTCS P0607 To P1047 >> 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/HIGH RESISTANCE
ASD RELAY
POWERTRAIN CONTROL MODULE (PCM)

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