P1646 – Supercharger (SC) control valve solenoidcircuit malfunction (Buick)

By BAT Team (Contact Me)
Last Updated 2023-11-21
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CodeFault LocationProbable Cause
P1646 Supercharger (SC) control valve solenoidcircuit malfunction
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Wiring open circuit/short circuit to ground! short circuit to positive, SC control valve solenoid, ECM

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