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Home >> Lexus >> 2007 >> GS 430 >> Repair and Diagnosis >> Engine Performance >> Engine Control System (3UZ-FE) >> SFI System >> DTC P2419 Evaporative Emission Pressure Switching Valve Stuck ON; DTC P2420 Evaporative Emission Pressure Switching Valve Stuck OFF >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

  1. P2419: Vent valve stuck closed
    TYPICAL MALFUNCTION THRESHOLDS CHART

    One of following conditions met -
    FTP when just after reference pressure measurement began -1 kPa (-7.5 mmHg) or higher
    Reference pressure Lower than -4.85 kPa (-36.37 mmHg)
    Reference pressure -1.05 kPa (-7.92 mmHg) or higher
    Reference pressure Not saturated within 60 seconds
    Reference pressure difference between first and second 0.7 kPa (5.25 mmHg) or more
  2. P2420: Vent valve stuck open (vent)
TYPICAL MALFUNCTION THRESHOLDS CHART

EVAP pressure change after EVAP canister vent valve is ON Less than 0.3 kPa (2.25 mmHg)