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View Full Version : Check engine light p0446 p0440 p0441 help??

JJ_IS300
05-07-2009, 12:49 PM
I wanna know what these codes mean p0446 p0440 p0441 i recently fixed my 02 sensor and i dont know why these engine light keep coming up.

thanks
wenger828
05-07-2009, 04:52 PM
those are all evap codes.

guaranteed the VSV valve on canister is stuck (vacuum switching valve) and the charcoal canister probably clogged. toyota i believe sells the whole thing as one unit. it'll fix all those codes
ElusiveIS
05-07-2009, 05:24 PM
P0440 EVAP Control System.
P0441 EVAP Control System Improper Purge Flow.
P0446 EVAP Control System Vent Control.

http://www.troublecodes.net/Toyota/
JJ_IS300
05-07-2009, 05:30 PM
those are all evap codes.

guaranteed the VSV valve on canister is stuck (vacuum switching valve) and the charcoal canister probably clogged. toyota i believe sells the whole thing as one unit. it'll fix all those codes

thanks for the info is there anything that perhaps causes this issues? also how would i go on about checking that vsv valve on canister.