Parts for your 2007 Nissan Dualis-Map sensor

2007 Nissan Dualis MAP sensor: is it actually fitted?

For Australian and New Zealand–delivered 2007 Nissan Dualis models running the MR20DE 2.0‑litre petrol engine, a traditional manifold absolute pressure (MAP) sensor isn’t used. That’s not hearsay—Nissan’s own technical literature backs it up. The Nissan Qashqai/Dualis J10 Model Service Manual for the MR20DE (EC – Engine Control System) details the Mass Air Flow (MAF) sensor–based load strategy and shows no MAP sensor in the component layout or wiring diagrams for the petrol variant. Likewise, the Nissan Electronic Parts Catalogue (FAST) listings for the J10 MR20DE intake hardware don’t show a MAP sensor on the manifold or intake runners. By contrast, the J10 diesel engines (e.g., M9R 2.0 dCi) documented in the same service manual do include a manifold/boost pressure sensor.

Why no MAP sensor on the petrol Dualis? Nissan engineered the MR20DE to calculate engine load primarily from a hot‑wire MAF sensor mounted in the intake tract upstream of the throttle. With a naturally aspirated setup, the MAF provides a direct measurement of incoming air mass, letting the ECU fine‑tune fuel and ignition without needing manifold pressure as a primary input. The ECU also references throttle position, engine speed, intake air temperature, and learned trims to keep things tidy under the bonnet. It’s a proven, reliable approach that Nissan used widely in this era.

Chasing a “MAP” fault on a petrol Dualis? It’s common for generic scan tools to display a MAP parameter because the OBD standard defines one, but on the MR20DE that figure is derived (calculated) rather than read from a physical sensor. If there’s rough running, poor economy, or odd load readings, attention is better spent on the MAF and the usual suspects.

• Inspect and, if needed, clean the MAF sensor using proper MAF cleaner (never touch the element).
• Check for intake leaks between the airbox and throttle body, and for split PCV or vacuum hoses.
• Ensure the throttle body isn’t gummed up, a light clean can restore stable idle.
• Verify air filter condition and that the airbox is sealed correctly.

If the vehicle is a diesel Dualis (not the MR20DE petrol), it will have a MAP/boost sensor on the manifold or intercooler plumbing. In that case, cleaning light oil residue from the sensor tip and confirming hose integrity is part of sensible maintenance—refer to the diesel EC section of the J10 service manual for exact procedures.

Popular questions about the 2007 Nissan Dualis MAP sensor

Does my 2007 Nissan Dualis petrol have a MAP sensor?
For AU/NZ petrol models with the MR20DE, no. Nissan’s J10 service manual for the MR20DE shows a MAF‑based system with no MAP sensor fitted. Diesel variants do use a manifold/boost pressure sensor.

Where does the petrol Dualis measure airflow if there’s no MAP sensor?
It uses a hot‑wire MAF sensor in the intake duct before the throttle. The ECU calculates engine load from the MAF signal and other inputs like throttle position and intake air temperature.

Why does my scan tool show a MAP reading on a petrol Dualis?
That value is calculated by the ECU to meet OBD data requirements, not read from a physical MAP sensor. If the number looks off, check the MAF, vacuum leaks, and throttle body condition rather than hunting for a non‑existent sensor.