DTC P0014-00: 'B (Exhaust)' Camshaft Position - Timing Over-Advanced Or System Performance (Bank1): General Description

The Variable force solenoid (VFS) is an integral part of the Continuously Variable Valve Timing (CVVT) system. The VFS controls the flow of engine oil in the CVVT system actuator assembly. As the ECM controls the duty cycle of the VFS, oil pressure/flow advances or retards the cam timing. Duty cycles near 0% or 100% represent rapid movement of the camshaft. Retaining a fixed camshaft position is accomplished by dithering (oscillating) the VFS duty cycle.

The ECM calculates and determines the desired camshaft position. It continually updates the VFS duty cycle until the desired position is achieved.

With the appliance of CVVT system, engine power, fuel efficiency and the quality of exhaust gas are improved.