Where is the idle control valve on a lexus lx470 2001

The idle control valve or motor may have a malfunction or the air passage it controls may be partially blocked.

I'd just take it back to them, don't fiddle your self.

Engine stall or RPM fluctuates at idle.

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

You need a new idle air control valve located under the throttle body. I know somebody did the cleaning and its work,but it's very tight to remove it out. You can do a search on " RX idle air control valve"

idle air control valve is shot, replace it

Have the IAC (idle air control) valve checked or replaced. This unit controls airflow throught the intake-engine when the gas pedal isn't pressed!!

Its a Oil Control Valve most likely. Get the valve. Its like 100 from Lexus. Mine did the exact same thing with that code. GS300

if it drives fine off idle then I would suspect the Idle air control valve.
If its hard to start unless you put your foot slightly on the gas then again I would suspect the IAC

It could be a idle air valve, a loose, unplugged or missing vacuum hose or a throttle position sensor.

most likly is the air idle controll valve.needs replaced.