Possible Causes
WARNING: This page is about a different car, the 2003 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
Possible causes are:
- If the difference between VTA and VTA2 is out of the threshold for 10 seconds when idle is ON, but for 2 seconds when idle is OFF.
- Defective throttle body assembly (throttle position sensor).