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P0446 – 2002_TOYOTA_ECHO

Code : P0446
Make : 2002_TOYOTA_ECHO
Description : P0446 2002 TOYOTA ECHO Evaporative Emission Control System Vent Control Malfunction
Possible causes :
– Missing Fuel cap
– Incorrect fuel filler cap used
– Fuel filler cap remains open or fails to close
– Foreign matter caught in fuel filler cap
– Incorrect fuel tank vacuum relief valve
– VSV for vapor pressure sensor
– ECM
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.

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