Parts for your 2019 Mitsubishi Asx-Map sensor

2019 Mitsubishi ASX MAP Sensor: What it does and how to look after it

Yes, the 2019 Mitsubishi ASX is fitted with a MAP (Manifold Absolute Pressure) sensor and it’s relevant to how the engine runs. Mitsubishi’s own technical literature confirms it: the ASX/Outlander Sport workshop manual (GA/GF series, 2016–2020, Group 13A – Engine Electrical, MFI) describes the Manifold Absolute Pressure sensor as an ECM input, and the factory OBD-II section covers MAP-related DTCs P0106, P0107 and P0108. The Mitsubishi ASA electronic parts catalogue for GA2W/GK2W model codes also lists a MAP sensor for ASX models in this period. That’s the boring proof out of the way—now, what does it actually do for your ASX?

The MAP sensor reads pressure inside the intake manifold so the engine control module can figure out engine load. That data helps trim fuel delivery and ignition timing, smooth out idle, and keep emissions in check. On the 2.0‑litre MIVEC petrol, it also acts as a cross-check to the MAF, keeping things tidy when conditions change quickly—like sudden throttle stabs or big altitude shifts on a roadie across the ditch.

When the MAP sensor goes crook, the ASX can run rich or lean, idle roughly, feel flat off the line, or drink more fuel than it should. The check engine light may join the party with those P0106–P0108 codes.

Good news: there’s no scheduled replacement for the MAP sensor, and basic care is easy under the bonnet.

• Keep the intake tract healthy—fix any split vacuum hoses and make sure the air filter isn’t choked.
• If oil mist builds up in the manifold (common with older PCV systems), consider a gentle clean. Use electronics-safe cleaner only, don’t poke the sensing element.
• If removing the sensor, replace the O-ring and reconnect the plug firmly. Tighten mounting screws to the spec in the workshop manual.
• Chasing a fault? Scan for codes, compare MAP kPa readings to barometric pressure with ignition on/engine off, and check live data at warm idle.

Replacement is straightforward: disconnect the battery, unplug the connector, remove the fixing screws, swap the sensor and O-ring, and refit. Clear any codes and road test. If the light returns, look for vacuum leaks or wiring issues before blaming the new part.

With a sound MAP sensor, the 2019 ASX runs cleaner, uses less fuel, and feels sharper—exactly what most Kiwi and Aussie owners want from their daily drive.

Popular questions

Does the 2019 Mitsubishi ASX use a MAP sensor or only a MAF?
It uses both. The MAP sensor feeds manifold pressure to the ECM, while the MAF measures incoming air mass. Mitsubishi’s workshop manual for the GA/GF ASX details the MAP as a core ECM input and lists MAP-related DTCs, so it’s definitely part of the system.

Where is the MAP sensor on a 2019 ASX?
It sits on or near the intake manifold, typically close to the throttle body. Look for a small black sensor with a two- or three-pin connector and a single O-ring seal seating into the manifold.

Can you drive with a faulty MAP sensor?
The car will usually start and run, but it can be gutless, use more fuel, and may trigger limp behaviour. It’s better to diagnose and fix promptly—often it’s a split hose, dirty sensor, or a loose plug rather than a dead unit.