DTC P0010: Camshaft Position "A" Actuator Circuit (Bank 1); DTC P0020: Camshaft Position "A" Actuator Circuit (Bank 2): Description
The Variable Valve Timing (VVT) system includes the ECM, camshaft oil control valve and VVT controller. The ECM sends a target duty-cycle control signal to the camshaft oil control valve. This control signal regulates the oil pressure supplied to the VVT controller. Camshaft timing control is performed according to engine operating conditions such as intake air volume, throttle valve position and engine coolant temperature. The ECM controls the camshaft oil control valve, based on the signals transmitted by several sensors. The VVT controller regulates the intake camshaft angle using oil pressure through the camshaft oil control valve. As a result, the relative positions of the camshaft and crankshaft are optimized, the engine torque and fuel economy improves, and the exhaust emissions decrease under overall driving conditions. The ECM detects the actual intake valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control. This is how the target intake valve timing is verified by the ECM.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0010 | Open or short in camshaft oil control valve for intake camshaft (bank 1) circuit timing (1 trip detection logic) |
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| P0020 | Open or short in camshaft timing oil control valve for intake camshaft (bank 2) circuit (1 trip detection logic) |
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