DTC P1346 OR DTC P1351 Lexus ES XV30

Code Definition

1. DTC P1346: Variable Valve Timing (VVT)/Crankshaft Position Sensor Circuit Range/Performance Fault (Bank No. 1)
2. DTC P1351: Variable Valve Timing (VVT)/Crankshaft Position Sensor Circuit Range/Performance Fault (Bank No. 2)

Circuit Description

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

1. Mechanical system malfunction.
2. Faulty ECM.

Diagnostic Aids

Using scan tool, read freeze frame data. Freeze frame records engine conditions when malfunction is detected.