Parts for your 2013 Subaru Exiga-Map sensor

2013 Subaru Exiga MAP sensor — what it does and when to service or replace it

Technical references confirm the 2013 Subaru Exiga (YA series) uses a Manifold Absolute Pressure (MAP) sensor across its engine range. The Subaru Exiga Service Manual (YA, Engine/Diagnostics) lists DTCs P0105–P0108 for the “Manifold Absolute Pressure Sensor,” indicating it’s a monitored and critical input to the ECM. Subaru’s electronic parts catalogue for 2013 Exiga variants (EJ20, EJ25 and turbo 2.0GT) includes a “Sensor – MAP” assembly (commonly Denso, e.g., 22012AA090/22012AA160). Turbo 2.0GT models rely on the MAP signal for boost/load control per Subaru engine management documentation. So yes—this model is fitted with a MAP sensor and it matters.

The MAP sensor on a 2013 Subaru Exiga measures the absolute pressure inside the intake manifold. With that, the engine computer figures out engine load so it can dial in fuelling and ignition timing accurately. On the turbocharged 2.0GT, the MAP signal is also used to track boost and keep it within target, which helps power delivery stay smooth and keeps knock at bay. Even the naturally aspirated variants use the MAP data for transient response, barometric correction, and diagnostics, so it’s a small part doing a big job.

When the MAP sensor isn’t happy, the Exiga can show rough idle, lazy throttle response, flat spots under load, poor fuel economy, or—on turbo models—boost that feels inconsistent. The dash may throw a check engine light and log codes like P0105–P0108. A quick scan-tool check helps: key-on/engine-off should read close to local barometric pressure, idle should be notably lower (vacuum), and readings should change cleanly with throttle.

There’s no fixed replacement interval, but it’s smart to give it attention during regular servicing (roughly every 12 months or 15,000 kilometres, as conditions allow). Practical maintenance includes:

• Inspecting the sensor port and any short vacuum hose for oil mist or carbon build-up.
• Checking the electrical connector for green corrosion, loose pins, or brittle wiring.
• Making sure the manifold gasket surfaces near the sensor are sealing properly to avoid vacuum leaks.

Replacement on most Exiga engines is straightforward: unplug the connector, remove the fixing screws, lift the sensor off with its O-ring, and refit the new Denso-quality unit. It should be seated squarely, fasteners only need to be snug—overtightening can crack the plastic. No special relearn is typically needed, but a gentle drive helps trims settle. For owners chasing boost issues on the 2.0GT, pairing a new MAP sensor with a smoke test for leaks and a clean throttle body often restores crisp, consistent performance.

Choosing an OE or OE-equivalent sensor keeps the calibration spot-on. Cheap copies can skew readings, which leads to over-fuelling, pinging, or emissions fails. A tidy connector, a clean port, and a healthy sensor go a long way to keeping the seven-seater Exiga running sweet as.

Popular questions

1. Where is the MAP sensor on a 2013 Subaru Exiga?

   On most 2013 Exiga engines, the MAP sensor sits on the intake manifold near the throttle body. Turbo 2.0GT variants place it on or near the manifold plenum with a single electrical connector, some versions use a short hose from the manifold to the sensor body.

2. What are the signs a MAP sensor is failing on an Exiga?

   Common signs include rough idle, hesitation, worse fuel economy, and a check engine light with codes like P0105–P0108. Turbo models may show wavering boost or limp behaviour. Scan-tool data that’s jumpy or unrealistic for load is a strong clue.

3. Does the 2013 Exiga also have a MAF sensor?

   Many Exiga variants run both a MAF and a MAP. The MAF measures incoming air mass, while the MAP confirms manifold pressure for load, transient fuelling, and diagnostics. The ECM blends these inputs to keep drivability and emissions in check.