2000 Toyota Tundra Code P0446

I have a 2005 Toyota Tundra Limited. Joined Feb 9 2007. A very common trouble code with the Toyota Tundra is the P0446 code.

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They are presented somewhat in order from most to least likely to be at fault.

2000 toyota tundra code p0446. If the gas cap was replaced and you used an aftermarket gas cap it may also be leaking as well due to a poor seal. Toyota Factory Service Bulletin OBDII Code P0446. General fault code for Evaporative Emission Control System Malfunction.

This trouble code references a number that is given to you when you plug your Tundra into a OBDII scanner. The solenoid is normally closed. A code P0446 could mean one or more of the following has happened.

Typically this indicates a faulty vent valve a bad control circuit for that valve or a blockage in the vent valve. My 2001 47L Tundra had P0441 P0446 codes. 2003 2004 Toyota Corolla.

Asked Aug 7 2013 by Tommy. In all cases it clearly shows the mechanic that a check of the EVAP vent valve is in order. Toyota has issued a service bulletin EG013-03 to address a problem with the evaporative emissions system and codes P0440 P0441 OR P0446.

The gas tank was and is 34 full. My scanner found only these codes. Toyota is having a lot of problems with failures in their EVAP systems.

The fuel vapors from the fuel tank are absorbed and stored by charcoal pellets in the charcoal canister. If P0446 is combined with P0440 and P0441 use this bulletin. P0446 code is an evaporation leak code also p0440 p0441 and p0456 could be as simple as a loose gas cap most common would be a charcoal canister.