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DTC CODE DTC DETECTION CONDITION TROUBLE AREA P0014 P0024 The exhaust valve timing is not adjusted in the valve timing advance range (2 trip detection logic). Valve timing Oil control valve (OCV) for exhaust camshaft OCV filter Camshaft timing exhaust gear ECM P0015 P0025 The exhaust valve timing is not adjusted in the valve timing retard range (1 trip detection logic). Valve timing OCV for exhaust camshaft OCV filter Camshaft timing exhaust gear ECM MONITOR DESCRIPTION The ECM optimizes the intake valve timing using the VVT (Variable Valve Timing) system to control the intake camshaft. The VVT system includes the ECM, Oil Control Valve (OCV) and VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the intake camshaft. If the difference between the target and actual intake valve timings is large, and changes in the actual intake valve timing are small, the ECM interprets this as the VVT controller stuck malfunction and sets a 3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P0015... |