P0045 - Turbocharger / Supercharger Boost Control Solenoid 'A' Circuit Open

System Information

A boost control solenoid is normally used to operate either a variable geometry turbocharger mechanism or a standard turbocharger wastegate mechanism.

Fault Code Explained

Although this fault code indicates that the Turbo Boost Control Solenoid circuit is open, this does not always mean a complete break in the circuit.

The fault code can also be set for the following reasons:

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