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have tried to clear code PO171 with cleaning MAS and checking for leads but code keeps coming back. Any common leaks with this type of car that anyone knows that might help

Vehicle: 2006 Volkswagen jetta 2.0 T

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Hi there,

If the mass air flow is good and there isn't any intake manifold gasket leaks, it could be an issue with the front O2 sensor or with the exhaust leaking. Low fuel pressure will also cause this as well. It is still possible the maf sensor is the culprit even though you have cleaned it.

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