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HOMESERVICE MANUALSHYUNDAI2003XG350 LREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (2 OF 2)DIAGNOSTIC TESTSDTC P0455: EVAP EMISSION SYSTEM - LEAK DETECTED (LARGE LEAK)GENERAL INFORMATIONDTC DETECTING CONDITION
2003 Hyundai XG350 L

General Information: DTC Detecting Condition

2003 Hyundai XG350 LSECTION DTC Detecting Condition
DTC DETECTING CONDITION CHART

Item Detecting Condition Possible cause
DTC Strategy
  • Large leakage (> 0.04")
  • Leakage in each hose/fuel filler pipe
  • Leakage in PCSV/CCV/Canister/Fuel tank
  • Faulty PCM
Enable Conditions
  • 1.0V < Fuel tank pressure < 3.2V
  • Intake air temperature < 60°C (140°F)
  • Vehicle speed is greater than or equal to 60 km/h (37.28 mph)
Threshold value
  • Different pressure between two points is greater than or equal to 0 mmAq or < 33 mmAq
Diagnosis Time
  • After Engine Start
MIL On Condition
  • 2 driving cycles
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.