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Home >> Kia >> 2021 >> Rio S, 4D Hatchback >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 6) >> DTC P0401-00: Exhaust Gas Recirculation Flow Insufficient Detected >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Monitor the signal
  • Poor connector connection
  • Stuck EGR cooler
  • Leaking and stuck the EGR pipe
  • Leak intake manifold
  • Leak exhaust manifold
Enable Condition
  • Fuel cutting - OFF
  • Vehicle speed is faster than 20km/h
  • Intake temperature is higher than 15°C (59°F)
  • Ambient temperature is higher than 0°C (32°F)
  • Coolant temperature is higher than 60°C (140°F)
  • Barometric pressure is higher than 74.5kPa
Threshold Value
  • Ratio between measured amount of EGR and target amount of EGR is less than 0.1
Diagnostic Time
  • 6s
MIL ON Condition
  • 2 driving cycles