Parts for your 2017 Mitsubishi Eclipse cross-Map sensor

2017 Mitsubishi Eclipse Cross MAP sensor: what it does and how to look after it

Based on Mitsubishi’s Eclipse Cross Service Manual (Engine Control section) and the Mitsubishi ASA parts catalogue for the 4B40 1.5L turbo petrol introduced in late 2017, this model uses a Manifold Absolute Pressure (MAP) sensor as a primary engine control input. Technical data providers used in AU/NZ workshops (e.g., Autodata) also list MAP-related DTCs (P0106–P0108) for this vehicle, confirming fitment.

On the 2017 Eclipse Cross, the MAP sensor measures the absolute pressure inside the intake manifold so the ECU can work out engine load. That info is crucial for fuelling, ignition timing and turbo boost control, especially on the 1.5‑litre direct‑injected turbo. Many cars of this era run a “speed‑density” strategy, so the MAP reading, together with intake air temperature and engine speed, replaces a traditional airflow meter. Some variants also have a charge‑pipe pressure/temperature sensor (often called a T‑MAP) working alongside the manifold sensor.

When the MAP sensor goes out of whack, the car can feel doughy off the line, surge on light throttle, drink more fuel than usual, or flick on the check engine light. Common codes include P0106, P0107 and P0108. Under the bonnet checks should include the sensor plug and wiring, the O‑ring seal, and any vacuum or boost leaks around the manifold and hoses. Oil mist from the PCV or a tired turbo can contaminate the sensing port, so if there’s repeat build‑up, address the cause as well as the symptom.

There’s no scheduled replacement interval for the MAP sensor—treat it as inspect-and-clean during regular services. If contamination is visible, remove it and use an electronics‑safe MAP/MAF cleaner. Don’t poke the sensing hole, just spray, drain and let it fully dry. Refit with a fresh O‑ring if it’s flattened or nicked, and tighten the retaining fastener to workshop spec. After replacement, clear codes and take a short drive so the ECU can relearn trims.

Quick health checks with live data are handy: with the key on/engine off, pressure should read close to local barometric (around 100 kPa at sea level). At hot idle expect roughly 25–40 kPa, and under boost it can climb well above 100 kPa absolute. If numbers are implausible, or readings don’t track with throttle and boost, it’s time to test the circuit and, if needed, fit a quality replacement.

• Typical symptoms: rough idle, hesitation, high fuel use, CEL on.
• Handy tip: keep intercooler and PCV systems in good nick to reduce oil contamination.

FAQs

Does the 2017 Eclipse Cross have a MAP sensor or just a MAF?
It uses a MAP sensor on the intake manifold, and many versions also run a charge‑pipe pressure/temperature sensor. Airflow is generally calculated (speed‑density) rather than measured with a separate MAF, which suits turbo control and transient response.

What MAP readings should be expected on a healthy 1.5T?
Key on/engine off: ~100 kPa at sea level. Hot idle: typically 25–40 kPa. Under load/boost: well over 100 kPa absolute (exact peak varies with tune and conditions). If readings don’t move logically with throttle, check the sensor and plumbing.

How often should the MAP sensor be replaced, and what might it cost in AU/NZ?
There’s no time or kilometre‑based interval—replace only if faulty. In Australia and New Zealand, quality OE‑equivalent sensors commonly land in the AUD/NZD 120–250 range, with 0.3–0.6 hours labour. Always confirm with diagnostics before spending up.