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Home >> Suzuki >> 2006 >> XL-7 Base, 4WD, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> DTC P0456: Evaporative Emission System Leak Detected >> DTC Detecting Condition and Trouble Area
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DTC Detecting Condition and Trouble Area

DTC DETECTING CONDITION AND TROUBLE AREA CHART

DTC detecting condition Trouble area
When specified vacuum is applied to EVAP system by EVAP leak detecting pump while EVAP purge valve and EVAP canister vent valve is closed.
System vacuum pressure (minimum pressure) does not exceed the leak vacuum pressure (reference pressure) which is containing the leak pressure equal to the leak caused by 0.5 mm (0.02 in.) diameter hole during the specified vacuum applied.
(2 driving cycle detection logic)
  • Missing, loose or malfunctioning fuel filler cap, or leakage from cap gasket
  • EVAP control system vacuum passages
  • Fuel tank component parts
  • EVAP canister
  • EVAP canister purge valve
  • EVAP leak check module
  • Fuel level gauge
  • ECM