If something seals with a o-ring. Plan on replacing the seal. They can compress and fail even if they are intact. Turbo underboost codes can be caused by the turbo housing cracking. Boost pressure loss. Causing poor performance.

If you buy a scan tool to read your check engine light, use Ai to help you understand what that code means or what part may be causing the issue. Understand the repair and the tools required.

New to automotive, just getting started? Pro tip: Always start bolts by hand. If theres more than one bolt, tighten them in a star pattern to avoid breaking bolts or the component you are installing.