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Home >> Lexus >> 2006 >> LS 430 >> Repair and Diagnosis >> Engine Performance >> System >> SFI System - Diagnostics >> DTC P2419 Evaporative Emission Pressure Switching Valve Stuck On; DTC P2420 Evaporative Emission Pressure Switching Valve Stuck Off >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

P2419: Vent valve stuck closed 

"Saturated" indicates that the EVAP pressure change is less than 0.1 kPa (0.75 mmHg) in 30 seconds.

TYPICAL MALFUNCTION THRESHOLDS

One of following conditions met -
FTP when just after reference pressure measurement began Higher than -1 kPa (755 mmHg)
Reference pressure Less than -4.85 kPa (726 mmHg)
Reference pressure -1.05 kPa (754 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

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)