Parts for your 2014 Subaru Exiga-Map sensor

2014 Subaru Exiga MAP sensor: what it does, where it lives, and how to look after it

Yes, the 2014 Subaru Exiga uses a MAP (Manifold Absolute Pressure) sensor. This isn’t guesswork—Subaru’s factory service information for the YA-series Exiga (MY2012–2015) in the Engine/ECM diagnostics identifies a “Manifold Absolute Pressure Sensor,” and the Subaru FAST electronic parts catalogue for the same model years lists the MAP sensor as an intake-manifold–mounted component on both naturally aspirated and turbo variants. Diagnostic sections also cover DTCs P0106–P0108 specific to the MAP sensor, which further confirms fitment.

On this model, the MAP sensor measures the absolute pressure inside the intake manifold. The ECU uses that reading to work out engine load, then refines fuelling and ignition timing. On turbo GT grades, the MAP sensor also helps the ECU manage boost and protect the engine if pressure goes out of whack. Even on models with a MAF sensor, the MAP data is still used for altitude compensation, transient load changes, and as a cross-check to keep drivability tidy.

Signs the MAP sensor or its plumbing is unhappy include a lumpy idle, sluggish throttle response, black smoke on tip-in, poor fuel economy, hard starts, or the odd stall. The check engine light may log P0106, P0107 or P0108. On turbo versions, erratic boost or limp mode can also show up.

There’s no scheduled replacement for the MAP sensor, it’s a “replace on condition” item. As part of routine servicing, a few quick checks go a long way:

• Inspect the MAP sensor connector for corrosion or loose pins, and the harness where it runs past the throttle body and intercooler.
• Make sure the O-ring seals properly, air leaks skew readings. Some variants use a short vacuum hose—check it for splits or oil swelling.
• If there’s light oil misting on the sensor tip, a careful clean with electronics-safe/MAF-safe cleaner can help. Don’t poke the sensing element.

When replacement’s needed, it’s a straightforward job: disconnect the battery, unplug the connector, remove the retaining screw, lift the sensor out, fit a fresh O-ring, reinstall, clear any codes, and perform a short drive so the ECU can relearn trims. For turbo GTs, it’s smart to also pressure-test the intake for leaks—what looks like a MAP fault can be a boost hose issue.

• Where is the MAP sensor on a 2014 Subaru Exiga?
  On most Exiga variants it sits on or near the top of the intake manifold close to the throttle body. Turbo GT models typically have it on the manifold under or near the intercooler. Some trims use a small vacuum hose between the manifold and the sensor—if fitted, check that hose as well.
• Can the MAP sensor be cleaned, or should it be replaced?
  If it’s only lightly contaminated with oil vapour, a careful clean using electronics-safe/MAF-safe cleaner can restore normal readings. If the sensor has internal failure (recurring P0107/P0108, implausible pressure at key-on, or water ingress), replacement is the fix.
• Does the Exiga run both a MAF and a MAP sensor?
  Many 2014 Exiga trims use both. The MAF handles primary airflow measurement while the MAP provides manifold pressure for load, transient response, altitude correction, and, on turbo models, boost control and engine protection.