Circuit Description

WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Variable Valve Timing (VVT) sensor is also known as camshaft position sensor.

The Variable Valve Timing (VVT) system controls intake valve timing in response to driving conditions. DTC P1346 is set if ECM detects valve timing does not change (fixed timing) for bank No. 1 (right cylinder head). DTC P1351 is set if ECM detects valve timing does not change for bank No. 2 (left cylinder head). Possible causes are:

Mechanical system malfunction.
Faulty ECM.