P1126 - Intake Manifold Runner Control Actuator Circuit Bank 1
P1128 - Intake Manifold Runner Control Actuator Circuit Bank 2
P1130 - Intake Manifold Runner Control Position Sensor Circuit Range/Performance Bank 1
P1133 - Intake Manifold Runner Control Position Sensor Circuit Range/Performance Bank 2
These codes indicate that there is a problem with the intake manifold runner control system. The intake manifold runner control system is responsible for controlling the flow of air into the engine. When the engine is running at low speeds, the intake manifold runners are closed to increase air velocity and improve fuel economy. As the engine speed increases, the intake manifold runners open to allow more air to flow into the engine.
A problem with the intake manifold runner control system can cause the engine to run rough, stall, or lose power. It can also cause the Check Engine Light to come on.
If you are experiencing any of these symptoms, it is important to have your Porsche Boxster diagnosed by a qualified mechanic. The mechanic will be able to identify the source of the problem and recommend the necessary repairs.
