DTC P2004: Intake Manifold Runner Control Stuck Open (Bank 1); DTC P2006: Intake Manifold Runner Control Stuck Closed (Bank 1): Description

The Swirl Control Valve (SCV) is built into the intake manifold. The SCV consists of the position sensor and a DC motor. The SCV is attached to one side of the independent intake port. Depending on signals from the ECM, the DC motor opens and closes the SCV. The position sensor detects the opening angle of the SCV. When the SCV closes, the intake air flow velocity that will pass through the port on the other side of the independent intake port will become faster, which causes the lateral turbulence of the fuel in the fuel tank to strengthen. As a result, when engine coolant temperature is low, the fuel's atoms accelerate and the fuel's stability increases. Also, when the engine is running with a light load, the fuel efficiency increases, decreasing fuel consumption.

When the ECM has requested an SCV close operation but the SCV's actual opening angle is more than 20° for 1 second, DTC P2004 is output. When the ECM has requested an SCV open operation but the SCV's actual opening angle is less than 35° for 1 second, DTC P2006 is output.

HINT: 

After confirming DTCs P2004 and/or P2006, use Techstream to confirm the SCV ANG SENS D4 (SCV position sensor output voltage) while performing the SCV DUTY RATIO (DC Motor for SCV) of the Active Test.