Parts for your 2019 Subaru Outback-Map sensor

2019 Subaru Outback MAP sensor: what it does and how to look after it

Technical sources confirm the 2019 Subaru Outback uses a MAP (manifold absolute pressure) sensor. The Subaru Factory Service Manual for 2019MY Outback/Legacy includes diagnostics for DTCs P0106, P0107 and P0108 specifically titled “Manifold Absolute Pressure Sensor,” and the Subaru Electronic Parts Catalogue for the 2019 Outback (BS series) lists a MAP sensor mounted on the intake manifold for both the 2.5i FB25 and 3.6R EZ36 engines. So yes—this part is fitted and relevant to the 2019‑Subaru‑Outback map‑sensor.

On this model, the MAP sensor feeds the engine control module real‑time data about pressure inside the intake manifold. That lets the ECU work out engine load, fine‑tune fuel delivery and ignition timing, and keep things smooth across Aussie and Kiwi conditions—from sea‑level commutes to alpine trips. It also helps with altitude compensation and supports emissions systems. Even though the Outback is naturally aspirated, the MAP still matters for crisp throttle response, decent fuel economy and a clean tailpipe.

There’s no scheduled replacement interval for the MAP sensor on a 2019 Outback, it’s a solid‑state unit designed to last. That said, oil mist from the PCV system or dust from minor intake leaks can skew readings over time. As part of regular servicing of your 2019‑subaru‑outback map‑sensor, a quick visual under the bonnet for cracked hoses, loose clamps and perished O‑rings goes a long way. If drivability goes off—rough idle, hesitant acceleration, higher fuel use—or if the check engine light shows P0106, P0107 or P0108, it’s time to test it.

Workshop tips owners appreciate:

• Scan first. Confirm MAP‑related fault codes and compare live MAP kPa to barometric pressure KOEO (key on, engine off). Big mismatches point to sensor or wiring issues.
• Rule out leaks. Any vacuum or intake leak can make a healthy sensor look bad.
• Clean carefully. If contamination is visible, remove the sensor and mist with an electronics‑safe cleaner. Don’t poke the sensing port and let it dry fully before refit.
• Replace with the O‑ring. A new genuine O‑ring prevents unmetered air. Refit with light torque—just snug with a small spanner.
• Finish with a relearn. Clear codes, start, and let it idle, then take a short drive so the ECU trims settle.

Looked after properly, the MAP sensor helps the 2019 Subaru Outback feel eager, sip less petrol, and rack up the kilometres without fuss.

Popular questions

Where is the MAP sensor on a 2019 Subaru Outback?
It’s mounted on the intake manifold. On the 2.5i FB25 it sits near the top of the manifold with a single electrical connector and a sealing O‑ring. The 3.6R EZ36 placement is similar—easy to see once the engine cover is off.

What are the signs a MAP sensor needs attention?
Common clues include a check engine light (often P0106–P0108), rough idle, sluggish take‑off, black exhaust smoke, or higher‑than‑usual fuel use. Because intake leaks mimic a failed MAP, always check hoses and clamps first.

Does the 2019 Outback have both a MAF and a MAP sensor?
Yes. It uses a MAF sensor in the intake tract and a MAP sensor on the manifold. The ECU blends both signals to calculate load accurately across different driving and altitude conditions.