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Home >> Fiat >> 2019 >> 500L Trekking >> Repair and Diagnosis >> Engine Performance >> System >> 1.4L - DTCS P0616-00 To P1042-00 >> DTC Troubleshooting >> P0685-00-ASD/Main Control Circuit >> Possible Causes

Possible Causes

Possible Causes
ASD RELAY CONTROL CIRCUIT OPEN
ASD RELAY
POWERTRAIN CONTROL MODULE (PCM)

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