LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Kia >> 2020 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 6) (PHEV) >> DTC P0406-00: Exhaust Gas Recirculation Sensor A Circuit High >> DTC Information >> DTC Detecting Condition
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Signal monitoring
  1. Poor connection or damaged harness
  2. EGR Actuator position sensor circuit shorted to battery
  3. EGR Actuator position sensor malfunction
Enable Conditions
  • Engine running
Threshold Value
  • Valve position sensor voltage is higher than 4.74V
Diagnostic Time
  • 0.1s
Mil On Condition
  • 2 Driving Cycles
scientia non olet · About LEMON Manuals