Parts for your 2009 Nissan Serena-Map sensor

2009 Nissan Serena MAP sensor: used or not?

Short answer: the 2009 Nissan Serena (C25 series, MR20DE petrol) doesn’t use a separate MAP sensor. Technical references back this up. The Nissan Serena C25 Factory Service Manual (Engine Control, MR20DE) details intake measurement via a hot-film Mass Air Flow (MAF) sensor and lists no Manifold Absolute Pressure (MAP) sensor among engine control components. Nissan’s FAST parts catalogue for C25 likewise shows a MAF (commonly 22680-7S000 family) and no standalone MAP sensor for the MR20DE. Trade data aggregators used in AU/NZ workshops (e.g., Autodata/Autoinfo) also specify MAF-based load sensing for the C25 petrol Serena without a MAP listing.

Why no MAP on this model? Nissan engineered the naturally aspirated MR20DE to run a MAF-based strategy. The MAF directly measures the incoming air mass, giving the ECU precise load data without needing manifold pressure. Altitude compensation is handled by a barometric pressure sensor integrated into the ECU on this platform, not by a separate MAP unit. That design keeps parts count down and reliability up, which suits the Serena’s people-mover brief.

So if someone’s chasing “MAP sensor” problems on a 2009 Serena, they’re usually looking in the wrong spot. The smart play is to focus on the MAF and the rest of the intake system. Typical drivability issues—rough idle, iffy fuel economy, flat spots—are more often caused by a dirty or failing MAF, intake air leaks after the MAF, a grubby throttle body, or vacuum leaks (including PCV hoses). The EVAP pressure sensor and other vacuum-referenced bits aren’t the same as a MAP.

• What to check instead: clean the MAF with sensor-safe cleaner, ensure the air filter is fresh, inspect intake boots and clamps for cracks or loose fits, and give the throttle body a careful clean.
• Scan data tip: look at MAF g/s at hot idle (should be sensible for a 2.0-litre) and short/long-term fuel trims for vacuum leaks.

Popular questions

Does a 2009 Nissan Serena have a MAP sensor?
No. The C25 MR20DE petrol Serena uses a MAF sensor for load calculation and doesn’t fit a separate MAP sensor. The factory service manual’s engine control component list confirms it isn’t part of the system.

Where would a MAP sensor be on a Serena if it had one?
On vehicles that use one, it’s typically bolted to the intake manifold or connected via a short vacuum hose. On the 2009 Serena MR20DE, you won’t find it—look instead for the MAF mounted in the air intake duct near the air box.

What should be serviced instead of a MAP on this model?
Keep the MAF clean, replace the air filter on schedule, check for intake/vacuum leaks, and clean the throttle body. These simple steps sort most “MAP-like” drivability complaints on this Serena.