Circuit Description

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

DTCs set if valve timing does not change from current valve timing or current valve timing is fixed after the engine is warmed up and engine speed is at 400-4000 RPM. Possible causes are:

Valve timing.
Faulty OCV.
VVT controller assembly.
Faulty ECM.