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Home >> Volvo >> 2021 >> S90 T6 R-Design >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Intake And Exhaust System - Design >> (Turbo Bypass Valve) >> Turbo Bypass Valve (8/159) [2017-2022, B4204T27 | 2018-2022, B4204T28 | 2021-2022, B420T] >> Diagnostic Information

Diagnostic Information

The turbo bypass valve does not have a built-in diagnostic system. The Engine Control Module (ECM) monitors the turbo bypass valve and sets DTCs and readable parameter values.