2013 Buick Encore P2261 Code: Turbocharger Bypass Valve Mechanical Fault - Diagnosis & Solutions

I'm experiencing a P2261 diagnostic code on my 2013 Buick Encore, which indicates a 'Turbocharger/Supercharger Bypass Valve - Mechanical' issue. This code appears in the vehicle's trouble history, and while there is a hyperlink available for additional details such as symptoms and potential causes, I'm unable to locate comprehensive information directly linked to this specific fault. Can anyone provide insight into possible root causes or recommend reliable sources where I can find detailed explanations about this code? Any experience with similar issues on the 2013 Buick Encore would be greatly appreciated.