here's a good place to start looking, lots of information Good ol' P0446
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2005 Limited 4wd, 85,000 miles
2002 Tacoma SR5 4wd, 5 spd 123,000 miles
sold 1997 Lexus LX450 - triple locked from the factory 305,000 kms sold
sold 1998 SR5 4wd - 4cyl, 5 spd 205,000 kms sold
sold 2000 SR5, 4wd - V6, auto 190,000 kms sold