Getting P0446 error code? This might help. You might as well give it a try before spending hundreds of dollars. My vehicle is a 2000 Toyota Tacoma, but this could apply to many additional vehicles. Be sure to check out Fix It Angel's video as well:
• SOLVED P0446 diagnose ...
Toyota's list of possible P0446 causes:
Vacuum hose cracked, holed, blocked, damaged or disconnected
Open or short in vapor pressure sensor circuit
Vapor pressure sensor
Open or short in VSV circuit for EVAP
VSV for EVAP
Open or short in VSV circuit for vapor pressure sensor
VSV for vapor pressure sensor
Charcoal canister cracked, holed or damaged (-- This was my problem. Fixed with 5-minute epoxy!)
ECM
Good luck!
30 янв 2016