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Evaporative Emission Control System(PCSV)
DTC
Evaporative Emission Control System(PCSV) - Purge Control Sol.
P0441
Valve Stack
P0443
Evaporative Emission Control System(PCSV) - Purge Control Sol.
Valve Malfunction
DESCRIPTION
The evaporative system reduces hydrocarbon emission by trapping fuel tank vapors
until they can be burned as part of the incoming fuel charge. Evaporating fuel is stored
in a charcoal canister until it can be flushed into the intake manifold.
TROUBLESHOOTING GUIDE
DTC detection condition
Normal Operation
a. ECU checks current flows in the evaporative
emission purge solenoid drive circuit when the
solenoid is ON and OFF.
Normal Operation
a. Battery voltage is 10V or higher.
Malfunction
a. The solenoid coil surge voltage (system voltage +2V)
is not detected when the EVAP emission vent
solenoid is turned on/off.
CIRCUIT DIAGRAM
Diagnostic item
a. Evaporative emission
purge control solenoid
valve failed
b. Open or shorted
evaporative emission
purge solenoid circuit, or
loose connector
c. ECU failed
Probable cause
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