Description: Manifold Absolute Pressure Sensor. Fits BRZ, Crosstrek, Forester, Impreza, Legacy, Outback Manifold Absolute Pressure Sensor A failed Manifold Absolute Pressure Sensor will often have no noticeable symptoms beyond a check engine light, but it does cause your Subaru to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and Subaru genuine parts. BRZ. w/ Hybrid. Legacy, Outback.