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Home >> Kia >> 2021 >> Forte FE, Standard Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 2.0L (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
  • Signal monitoring
  • Poor connection or damaged harness
  • EGR cooler restricted
  • EGR pipe restricted/leaking
  • Intake manifold air leak
  • EGR actuator stuck
Enable Condition
  • Fuel cut - Off condition
  • EGR valve position study is completed
  • No relevant failure
  • IATS > -6.75°C (19.85°F)
  • ECTS > 54°C (129°F)
  • Engine speed between 1088 - 2016 rpm
  • Mean engine speed between ±192 rpm
  • Barometric pressure > 74 kPa
  • Battery voltage between 11 - 16 volts
  • Intake manifold pressure > 100hPa
  • TPS position ranges from 0° to 23.8 to 24.1° (depends on engine RPM and intake air temperature)
  • EGR recirculation flow > 5kg/h
Threshold Value
  • Difference between reference/measured pressure > 1.45
  • Intake manifold pressure >41 to 112 kPa (EGR valve close)
Diagnostic Time
  • Fuel cut off duration 10 seconds
MIL ON Condition
  • 1 Driving cycle