Some 2005-10 Toyota cars and crossover models with 2GR-FE V6 engines may turn on the check engine light and log trouble code P0505 in the PCM. One possible cause for the trouble, Toyota said, is a defective throttle body assembly.
Replacing the throttle body and gasket with updated components (parts 22030-0P050 and 22271-0P020, respectively) should eliminate further trouble.
Before ordering the new parts, check for leaky connections at the PCV and air induction systems.
If you find leaks, tighten the clamps or replace hoses as needed, then clear the code and see if it returns.
If all connections are tight, go ahead and replace the throttle body and gasket with confidence.
Vehicles that are susceptible to the throttle body troubles include 2005-09 Avalons; 2006-09 RAV4s; 2007-10 Camry sedans and Siena minivans, 2008-09 Highlanders; and 2009 Venza models.
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via e-mail at [email protected].