Questions and Answers

Lexus SC 400 DTC P1349 Q. Greetings, My vehicle just failed a smog test due to a fault code P1349. What is this and how can I repair it? 1998 Lexus SC 400 4.0 liter V-8 Auto transmission ABS P/S, A/C, Cruise control Thanks in advance, Greg

A. DTC P1349 is "VVT (Variable Valve Timing) System Malfunction (Bank 1)".

VVT system controls the intake valve timing to proper timing in response to driving condition. ECM controls OCV (Oil Control Valve) to make the intake valve timing properly, and, oil pressure controlled with OCV is supplied to the VVT controller, and then, VVT controller changes relative position between the camshaft and the crankshaft.

There is little you yourself can do to test or repair this system so a Lexus Dealer is your best bet to get it repaired.