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Home >> Buick >> 2015 >> Verano Leather >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls And Fuel - 2.0L (LHU) - DTC P025A To DTC P2635 Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P2261: Turbocharger Bypass Valve Stuck >> Diagnostic Aids

Diagnostic Aids

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The turbocharger bypass valve vacuum tank contains an internal check valve to prevent the tank from being pressurized during boost conditions. A leaking check valve will result in insufficient vacuum to open the turbocharger bypass valve after a quick throttle closing, causing abnormal pulsations and unusual noise.

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