Fault Code P2078 - Intake Manifold Tuning Valve Position Sensor Switch Circuit High

Hey RLCASS,

This will be problem with variable intake valve being shorted out in which case it needs to be replaced or the intake actuator valve is stuck inside the intake. Remove the valve for inspection and replace it if you can find nothing wrong, you will need to clear the codes as well, here is a guide of that and diagrams of the valve below.

https://www.2carpros.com/articles/check-engine-light-clear-codes

Please let us know happens so it will help others.

Best, Ken