Fixed! Intake Manifold Runner Stuck Closed (P2006/P2015)

Last week, I had a check engine light come on after accelerating pretty heavily to merge into traffic. The code was P200600 and P201500. Both are related to an Intake Manifold Runner problem, specifically that it was "stuck closed". This video is a quick session showing how it works, my troublshooting method, and then how I solved this issue by using a part from another intake manifold I had in the garage.

When the manifold is "stuck closed" it is because there is a spring in the intake manifold runner control (IMRC) that is forcing it closed. This is the normal position below 3,800 RPM. At 3,800 RPM, the solenoid under the intake manifold will open and allow vacuum to open the manifold runner. Then below 3,800 RPM the vacuum is closed back off and the spring closes the runner. So if the runner is "stuck closed" it's very highly likely that there is not sufficient vacuum to open it when it is commanded by the ECU. This also throws off the position sensor because it isn't seeing the proper range for an open runner (because it doesn't actually open).

Anyway... I hope you find this video helpful! Thanks for watching.