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Home >> Lexus >> 2007 >> GX 470 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC P0657 - P2A03 >> DTC P2419, P2420: Evaporative Emission Pressure Switching Valve Stuck ON; Evaporative Emission Pressure Switching Valve Stuck OFF >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

  1. P2419: Vent valve stuck closed
    TYPICAL MALFUNCTION THRESHOLDS

    One of following conditions set -
    1. EVAP pressure just after reference pressure measurement start Higher than -1 kPa (-7.5 mmHg)
    2. Reference pressure Less than -4.85 kPa (726 mmHg)
    3. Reference pressure -1.05 kPa (-7.93 mmHg) or higher
    4. Reference pressure Not saturated
    5. Difference between first reference pressure and second reference pressure 0.7 kPa (5.25 mmHg) or more
  2. P2420: Vent valve stuck open (vent)
TYPICAL MALFUNCTION THRESHOLDS

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