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Home >> Lexus >> 2021 >> GX 460 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes) (6 Of 7) >> SFI System >> DTC P2420: Evaporative Emission System Switching Valve Control Circuit High [08/2015 - 08/2019] >> Typical Enabling Conditions

Typical Enabling Conditions

Monitor runs whenever following DTCs not present P0452, P0453 (EVAP system)
EVAP key-off monitor runs when all of following conditions met -
Atmospheric pressure 70 to 111 kPa-a (525 to 833 mmHg-a)
Battery voltage 10.5 V or higher
Vehicle speed Less than 4 km/h (2.5 mph)
Engine switch Off
Time after key off 5, 7 or 9.5 hours
Purge VSV Not operated by scan tool
Vent valve Not operated by scan tool
Leak detection pump Not operated by scan tool
Both of following conditions met before key off Conditions 1 and 2
1. Duration that vehicle driven 5 minutes or more
2. EVAP purge operation Performed
Engine coolant temperature 4.4 to 35°C (40 to 95°F)
Intake air temperature 4.4 to 35°C (40 to 95°F)