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Home >> Audi >> 2015 >> A4 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 376 (Engine Control System (Diagnostic Codes (P1604-U0293) & Circuit Tests)) >> SFI System >> DTC P2420: Evaporative Emission System Switching Valve Control Circuit High [08/2013 - ] >> Typical Enabling Conditions

Typical Enabling Conditions

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
Monitor runs whenever the following DTCs are not stored None
Atmospheric pressure 70 kPa(abs) [525 mmHg(abs)] or higher, and less than 110 kPa(abs) [825 mmHg(abs)]
Auxiliary battery voltage 10.5 V or higher
Vehicle speed Less than 4 km/h (2.5 mph)
Power switch Off
Time after key-off 5, 7 or 9.5 hours
Canister pressure sensor malfunction (P0452, P0453) Not detected
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 is driven 5 minutes or more
2. EVAP purge operation Performed
Engine coolant temperature 4.4°C (40°F) or higher, and less than 35°C (95°F)
Intake air temperature 4.4°C (40°F) or higher, and less than 35°C (95°F)