Parts for your 2015 Mitsubishi Asx-Map sensor

2015 Mitsubishi ASX MAP Sensor — What It Does and How to Look After It

Technical sources confirm the 2015 Mitsubishi ASX uses a MAP (manifold absolute pressure) sensor. The Mitsubishi Motors ASX/RVR/Outlander Sport service manual for these model years details MAP sensor diagnostics (DTCs P0105–P0108) and wiring for both petrol and diesel engines. Mitsubishi’s ASA electronic parts catalogue also lists a manifold pressure sensor for GA-series ASX variants, and AU/NZ workshop data providers such as Autodata include MAP-related test values and fault codes for the 2015 ASX. So yes, a MAP sensor is fitted and relevant to this model.

On a 2015 Mitsubishi ASX, the MAP sensor measures the absolute pressure inside the intake manifold. The engine control unit uses that live pressure signal to calculate engine load, fine-tune fuel delivery, and adjust ignition timing. On diesel and turbocharged variants, it also helps manage boost and EGR operation. In everyday terms, a healthy MAP sensor keeps starts clean, throttle response smooth, and fuel economy on point across Aussie and Kiwi driving conditions.

There’s no routine replacement interval for the MAP sensor, but it does appreciate a bit of attention during regular servicing, especially if the vehicle sees lots of city stop–start, dusty roads, or short trips. A technician will typically scan live data to confirm the sensor reads close to local barometric pressure with the key on/engine off, and shows a steady vacuum signal at idle on petrol engines. They’ll also check the connector, harness, and the O-ring seal for leaks.

If contamination is found (oil mist on petrols, soot/oil blend on diesels), a careful clean with an electronics-safe cleaner can restore proper readings. Don’t poke the sensing port and don’t drown it in harsh solvents. If the sensor is cracked, waterlogged, or erratic under vacuum, replacement is the fix. Fit a new O-ring, seat it squarely on the manifold, snug the fasteners to manufacturer spec, reconnect the plug, clear any codes, and perform an idle/drive relearn if required.

• Common clues it’s playing up: check engine light (P0105–P0108), lazy throttle, rough idle, poor fuel economy, black smoke on diesels, or stalling.
• Good practice: inspect/scan at major services, keep the intake tract clean, and fix any vacuum leaks early to protect MAP accuracy.

Where is the MAP sensor on a 2015 Mitsubishi ASX?

On most 2.0L petrol ASX models, it’s mounted on the intake manifold near the throttle body with a three‑pin connector. On diesel variants, it’s typically on the intake pipe/manifold in the boost tract. If in doubt, follow the manifold toward the firewall and look for a small sensor secured with one or two bolts.

Can the ASX run without a MAP sensor?

It may start and run in limp mode using fallback values, but it won’t run well. Expect high fuel use, flat performance, and a glowing MIL. It’s not a drive-on fault—get it tested and repaired promptly to avoid further issues.

How do you test a MAP sensor on this model?

Use a scan tool to compare key-on/engine-off pressure to local barometric pressure, then check idle and snap‑throttle responses. If readings look odd, verify the 5 V reference, ground, and signal at the connector, and bench‑test with a hand vacuum pump if needed. Replace the sensor if it’s out of spec or intermittent.