Diagnostic Aids
WARNING: This page is about a different car, the 2003 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
If DTC P0010 is displayed, check the left bank VVT system circuit. If DTC P0020 is displayed, check the right bank VVT system circuit. Read freeze frame data using hand-held tester or OBD-II scan tool, as freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, or air-fuel ratio was lean or rich at the time of the malfunction.