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Home >> Hyundai >> 2021 >> Elantra N Line, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 35 (Engine Control System Diagnosis - 2.0L (Except HEV) (4 Of 6)) >> DTC P0455-00: Evaporative Emission System-Leak Detected (Large Leak) >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Monitoring Fuel Tank Pressure During Evacuation
  1. Poor connector connection
  2. Faulty fuel filler cap
  3. Leaking disconnected or plugged fuel vapor lines
  4. Faulty CCV
  5. Faulty PCSV
  6. Faulty canister
Enable Condition
  • Engine Coolant temperature (ECT) higher than 45°C (113° F)
  • Ambient Air temperature model higher than -8°C (17.6°F)
  • Vehicle speed lower than 12 km/h (7.5 mph)
  • Fuel level less than 85%
  • Barometric pressure higher than 75 kPa
  • Canister load less than 0.35
  • Minimum canister purge time more than 3s in case of canister load less than or equal to 0.1
  • Minimum canister purge time more than 25s in case of canister load more than or equal to 0.1
  • Engine speed lower than 1500 RPM
  • Pedal value less than 0.01%(Pedal sensor 1 voltage 0.859V, not pushed at all)
  • Differential fuel tank pressure is greater than -1100 Pa and less than 420 Pa
  • Minimum drive time check done one time since engine start (Vehicle speed higher than 24 km/h (14 mph) during 60s)
  • 60s since last EVAP monitoring test abortion
  • Modeled Ambient Pressure gradient during uphill driving lower than 1.08 psi (0.075 bar)
  • Time elapse in case of refueling identification is greater than 600s
  • Battery voltage higher than 10V
Threshold Value
  • It takes more than 20 seconds to make the fuel tank pressure below the -0.22 psi (-0.015 bar)
Diagnostic Time
  • Idle period for 25 seconds (after all diagnostic operating conditions are met)
MIL ON Condition
  • 2 driving cycles