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P0446 is a fault in the EVAP system, check your gas cap, the most common reason to throw that OBD code. Otherwise somewhere else in the vapor recovery system...saturated charcoal canister with liquid gasoline, purge vent bad, blocked vapor recovery hose. The most common reason for the charcoal canister to get saturated is trying to top off at fill up. Stop pump at first click, don't 'top off' tank
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Have a OBDII code p0446 on Toyota corolla 2002 and no pressure in the gas tank what could be the problem?
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