Some 2010-11 GX460 SUVs with 4.6-liter (1UR-FE) engines may illuminate intermittently the check engine light and store throttle body trouble code P2111 and/or P2112 in the PCM.
According to Lexus, if there are no symptoms present when the light comes on and the only codes logged are those listed above, the electronic throttle body assembly likely has an internal fault. Replacing the throttle body with an updated unit, part # 22020-0S021. That should eliminate further trouble.
"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].