P1349 Chevrolet Variable Valve Timing System Malfunction Bank 1

Possible causes

– Dirty or low engine oil
– Valve timing
– Oil control valve
– Variable Valve Timing controller assembly
– Engine Control Module (ECM)

What about the obd code?

The P1349 Chevrolet code is triggered when the valve timing does not change from of current valve
timing or the current valve timing is fixed.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P1349 Chevrolet Description

Variable Valve Timing (VVT) system controls the intake valve timing to proper timing in response to driving condition. The Engine Control Module (ECM) controls Oil Control Valve (OCV) 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.