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Home >> Genesis >> 2021 >> G90 5.0 Ultimate, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Control System Diagnosis - 3.3L (6 Of 9)) >> DTC P0455-00: Evaporative Emission System-Leak Detected (Large Leak) >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Check fuel tank pressure during evacuation
  1. Fuel Filler Cap missing
  2. Leakage in each hose/fuel filler pipe
  3. Leakage in CCV/Canister/Fuel tank
  4. Stuck in each purge hose/pipe between fuel tank and intake manifold
Enable Conditions
  • Engine Coolant Temperature is higher than 40°C (104°F)
  • Ambient Air Temperature (AAT) is higher than -8.25°C (17.15°F)
  • Vehicle speed is slower than 12 km/h (7.5 mph)
  • Fuel level is less than 85%
  • Time after engine starts has passed 100 seconds
  • Barometric pressure (BARO) is greater than 75 kPa
  • Canister load is less than 0.35
  • Minimum canister purge time is greater than 3 seconds in case of canister load is less than 0.1
  • Minimum canister purge time is greater than 25 seconds in case of canister load is greater or equal to 0.1
  • Engine speed is lower than 1500~1650 RPM
  • Gas pedal value is lower than 0.01%. (Pedal is not pushed at all)
  • Differential fuel tank pressure is between -1100Pa and 418.5 Pa
  • Time since last EVAP monitoring test abortion is longer than 60 seconds
  • Barometric pressure gradient is less than -2.0 kPa during uphill driving within 5 minutes
  • Time elapse in case of refueling identification is greater than 600 seconds
  • Battery voltage is greater than 10V
Case 1 Threshold Value
  • Time to generate a pressure, less than -1600Pa in fuel tank, is greater than 20 seconds
Diagnosis Time
  • 25 seconds
Case 2 Threshold Value
  • Time to decrease from -300 Pa (-3 hPa) to -700 Pa (-7 hPa) is greater than 10 seconds
Diagnosis Time
  • 15 seconds
MIL On Condition
  • 2 driving cycles