TSB: Cadillac Turbo DTC

A common issue across Cadillac XT and CT series involves increased wastegate valve friction leading to DTC P2B81, which necessitates turbocharger replacement to resolve the problem.
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June 9, 2026
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Cadillac Turbo DTC

This bulletin applies to 2020-2025 Cadillac CT4, CT5, XT5, XT6 and 2019-2025 XT4 vehicles. DTC P2B81 may be set as current or in history. This may be due to increased friction within the wastegate valve and will require turbocharger replacement.

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