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Home >> Toyota >> 2009 >> Prius Base >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC P1455 Vapor Reducing Fuel Tank System Malfunction >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

TYPICAL MALFUNCTION THRESHOLDS

Vapor concentration in purge air Less than -7 to -4% (depending on intake air temperature)
FAF smoothing value Less than 5%
VSV for purge flow switching valve No malfunction
Purge air volume after purge flow switching valve monitoring 2 g or more