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Home >> Mazda >> 2002 >> Millenia S >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.3L >> Diagnostic Tests >> DTC P0455: EVAP Control System, Excessive Leak Or Blockage Detected >> Detection Condition
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Detection Condition

PCM measures the fuel tank pressure (FTP1), which is the vacuum when a specified period has passed after the tank pressure has reached the preprogrammed target pressure and purge solenoid valve has been closed while monitoring conditions are met. See MONITORING CONDITION  . If fuel tank pressure is less than threshold, PCM determines EVAP system is blocked or has a large leak.

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