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Home >> Kia >> 2004 >> Rio Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel System & Fault Isolation >> DTC Troubleshooting >> DTC P0456: EVAP. Emission System - Leak Detected (Very Small Leak) >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

DTC DETECTING CONDITION AND POSSIBLE CAUSES

Item Detecting Condition Possible Cause
DTC Strategy
  • Monitoring fuel tank pressure trend after generating under pressure in fuel tank
  • Leakage in EVAP system line
  • Faulty CCV, PCSV or FTPS
Enable Conditions
  • Coolant temperature > 76°C (168.8°F)
  • Air temperature at start > -7°C (19.4°F)
  • Vehicle speed < 5 km/h (3.1 mph)
  • Time after start > 590 sec.
  • Estimated altitude < 2800 m (9185 ft)
  • Limited canister saturation
  • Minimum canister purge time: 3~25 sec.
  • Idle speed engine operating state
  • Fuel tank pressure: -0.8~0.55 kPa (-0.0082~0.0056 kg/cm2, - 0.116~0.079 psi)
  • No relevant failure
  • Battery voltage > 11V
 
Threshold Value
  • leak. diameter > 0.42 mm
Diagnostic Time
  • 30 sec. in Idle when all Enable Conditions fulfilled