P0234 on ecoboost 2.0, 22 Maverick - Tuned

[donohfx]

Hey,

From what I can understand - this could have a few causes:

1. Loose vacuum hose
2. Bad solenoid
3. Just bad params in tune.

How can I troubleshoot this to verify it's not a catastrophic problem?

I'm tuned with a custom map on a Cobb tuner. It showed up after a medium pull while the engine was a little colder than fully warmed up.

Been in limp mode with some hestitation since.

[SHOdded]

if only a tune is loaded may indeed be overboost. return to stock to verify.

of course a hose or two could have popped off the wastegate control, but easier to check behaviour w stock tune first.