2001 Toyota Tundra Code P0446

Toyota is having a lot of problems with failures in their EVAP systems.

2001 toyota tundra code p0446. P0441 indicates that there is an issue with the Evaporative Emissions System. P0440 TOYOTA code tech notes The P0440 code means that the control module has detected a leak in the Evaporative Emission EVAP. Asked Jun 28 2014 by anonymous.

There is a hose that runs from the charcoal canister on the right of the engine compartment to the engine. Bbfly-B6 OBD II OBD2 16 Pin Splitter Extension 1x Male and 2X Female Extension Cable Adapter 1FT30CM. This is the solenoid that opens to allow air into the charcoal canister during a purge cycle.

Specifically P0446 indicates an Evaporative Emission Control EVAP system vent control circuit malfunction. The most common code P0446 pertains to the vent solenoid. In all cases it clearly shows the mechanic that a check of the EVAP vent valve.

This trouble code references a number that is given to you when you plug your Tundra into a OBDII scanner. This solenoid valve responds to signals from the Engine Control Module ECM. I replaced then erased the codes and after 3 miles the CEL went off again.

Had OBD2 codes P0441 P0446 on my 1999 Toyota Corolla. Check engine code P0446 Evap Control System Vent Control Circ Unfortunately this code has nothing to do with the gas cap. Home Forums Tacoma Discussion 1st Gen.

Typically this indicates a faulty vent valve a bad control circuit for that valve or a blockage in the vent valve. A code P0446 could mean one or more of the following has happened. Bad vacuum switch Broken or damaged EVAP line or canister Open in PCM purge command circuit Open or short in Voltage feed circuit to Purge Solenoid Faulty purge solenoid Restriction in EVAP solenoid line or canister Corrosion or resistance in purge connector Bad PCM.