Most likely it's working you may have a vacuum leak a boost leak or a loose waste gate
Do you have any codes? Go to Autozone and have them pull the codes (write them down) for you (free).
Do you experience 'no power'? you car may be in 'limp mode' (ECU capping boost and power).
Could be you have a boost leak (code would say 'negative boost deviation')
Could be your turbo died.
May be a broken waste gate
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