LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2012 >> Veracruz GLS, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P0685: PCM Power Relay Control Circuit Open >> General Information >> DTC Detecting Condition
April 5, 2026: LEMON Manuals is launched! Read the announcement.

General Information: DTC Detecting Condition

DTC DETECTING CONDITION

Item Detecting Condition Possible cause
DTC Strategy
  • Detects a short to ground, to battery or open circuit on the main relay
  • Poor Connection
  • Open or short in control circuit.
  • Faulty Main Relay
  • Faulty PCM
Enable Conditions
  • Engine Running
  • 11V ≤ Ignition Voltage ≤ 16V
Threshold value
  • Open or Short in circuit
Diagnosis Time
  • Continuous (More than 5 sec. failure for every 10 sec. test)
MIL On Condition
  • DTC only (NO MIL ON)
NOTE: If Main relay has a fault (ex. Open) under engine running, the DTCs, P0638/P0685/P1295/P2106, can happen at the same time.

<DTC Name>

  • P0638 Throttle Actuator Control Range/Performance (Bank 1)
  • P0685 PCM/PCM Power Relay Control Circuit/Open
  • P1295 Throttle Actuator Control System - Power Management
  • P2106 Throttle Actuator Control System - Forced Limited Power
scientia non olet · About LEMON Manuals