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Home >> Hyundai >> 2021 >> Accent Limited >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 6) >> DTC P0401-00: Exhaust Gas Recirculation Flow Insufficient Detected >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

Trouble Shooting Condition Possible Cause
Main Action
  • Rationality check
  1. Poor connection
  2. EGR blockage or leakage
  3. Intake manifold leakage
  4. EGR actuator being stuck shut
  5. EGR valve
Prerequisite Conditions
  • Fuel cut off
  • Vehicle Speed is higher than 20 km/h
  • IAT is higher than 15°C (59°F)
  • AAT is higher than 0°C (32°F)
  • ECT is higher than 60°C (140°F)
  • BARO is higher than 74.5 kPa
  • Engine speed is higher than 320 RPM
Threshold Value
  • 0.1 or less difference in circulation amount between the measured EGR and the model EGR
Diagnostic Time
  • 6 sec
MIL
  • 2 Driving Cycle
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