DTC P0010 Camshaft Position "A" Actuator Circuit (Bank 1); DTC P0020 Camshaft Position "A" Actuator Circuit (Bank 2): Description

This DTC is designed to detect opens or shorts in the camshaft oil control valve (OCV) circuit. If the OCV duty-cycle is excessively high or low while the engine is running, the ECM will illuminate the MIL and store the DTC.
The VVT (variable valve timing) system adjusts the intake valve timing to improve the driveability. The engine oil pressure turns the camshaft actuator to adjust the valve timing. The OCV is a solenoid valve and switches the engine oil line. The valve moves when the ECM applies 12 V to the solenoid. The ECM changes the energizing time to the solenoid (duty-cycle) in accordance with the camshaft position, crankshaft position, throttle position, etc.

Fig 1: Camshaft Position System Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

DTC DETECTION CONDITION CHART

DTC Code	DTC Detection Condition	Trouble Area
P0010	An open or short in the Camshaft Oil Control Valve (OCV) for intake side (for Bank 1) circuit (1 trip detection logic).	Open or short in Camshaft Oil Control Valve (OCV) (for intake side of Bank 1) circuit OCV (for intake side of Bank 1) ECM
P0020	An open or short in the OCV for intake side (for Bank 2) circuit (1 trip detection logic).	Open or short in OCV (for intake side of Bank 2) circuit OCV (for intake side of Bank 2) ECM

HINT:

This DTC relates to the Camshaft Oil Control Valve (OCV).