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Home >> Fiat >> 2017 >> 124 Spider Classica, Standard Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> 1.4L - DTCS P060C-00 To P1042-00 >> DTC Troubleshooting >> P0686-00-ECM Main Control Circuit Low >> Possible Causes

Possible Causes

Possible Causes
ASD RELAY CONTROL CIRCUIT SHORTED TO GROUND
ASD RELAY
POWERTRAIN CONTROL MODULE (PCM)

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