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Home >> Hyundai >> 2016 >> Equus Signature >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P0685: ECM/PCM Power Relay Control Circuit/Open >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible cause
DTC Strategy
  • Voltage check
  1. Poor connection
  2. Short in circuit
  3. Faulty main relay
  4. ECM
Enable Conditions
  • Engine start
  • Voltage is between 11V and 16V
Threshold value
  • Signal open or Short in circuit
Diagnosis Time
  • Continuous
MIL On Condition
  • NO MIL
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