Parts for your 2009 Ford Transit-Map sensor

2009 Ford Transit MAP sensor — what it does and how to look after it

Yes, a MAP (manifold absolute pressure) sensor is fitted to 2009 Ford Transit models. Technical sources that document its use include the Ford Workshop Manual for Transit/V347–V348 (Mk7, 2006–2013), Ford ETIS/TIS engine management sections for Duratorq TDCi and Duratec engines, the Bosch EDC16/EDC17 common-rail diesel management overview (used on Transit diesels), and the Haynes Ford Transit Diesel 2006–2013 manual. These references describe the intake manifold/boost pressure sensor used for load calculation, boost control and diagnostics.

On this Transit, the MAP sensor reads the absolute pressure in the intake manifold so the ECU can figure out how much air is actually getting into the engine. That data is critical for fuelling, turbo boost control, EGR flow management, smoke limitation and altitude compensation. Even on variants that also run a MAF, the MAP is still used for boost monitoring and as a cross-check so the ECU can keep things tidy if one reading goes skew-whiff.

With age, the sensor tip can get coated in oil mist and soot, especially on the Duratorq TDCi. That grime slows its response and can trigger poor fuel economy, lazy throttle response, black smoke, limp mode, or fault codes such as P0106 (MAP range/performance) or P0237/P0238 (boost pressure sensor low/high). A quick inspection under the bonnet during routine servicing is a smart move.

Service tips they’ll actually use:

• Inspection every 40,000–60,000 km is sensible on high‑km diesels, more often if there’s heavy EGR or short-trip use.
• Cleaning: unplug, remove the retaining screw and lift the sensor out. Mist the tip with electronics-safe MAF/MAP cleaner only, let it air-dry, and never poke the sensing hole.
• Replacement: fit a new O‑ring, lightly oil it, seat the sensor squarely and snug the fastener to workshop spec. Reconnect the plug, clear DTCs and check live data for stable MAP at key-on/engine-off (near local barometric pressure).
• If contamination keeps coming back, check crankcase ventilation, EGR deposits and boost leaks so the new sensor doesn’t cop the same abuse.

Location-wise, most 2.2/2.4 TDCi Transits have the MAP/boost pressure sensor mounted on or near the inlet manifold/throttle/EGR housing. Petrol variants place it on the intake manifold close to the throttle body. Access is straightforward with basic hand tools.

Popular questions

Where is the MAP sensor on a 2009 Transit?
On most 2.2/2.4 TDCi diesels it’s on the intake manifold or a short section of charge pipe near the throttle/EGR assembly. Petrol versions mount it on the manifold near the throttle body. Look for a small sensor with a single Torx fixing and a three-pin connector.

Does a 2009 Transit use both MAF and MAP?
Many variants do. The ECU uses the MAF for airflow measurement and the MAP for boost/load calculation, EGR control and plausibility checks. Even if the MAF fails, the Transit can often run in speed‑density mode using the MAP.

Should the MAP sensor be replaced on a schedule?
There’s no fixed replacement interval in Ford’s schedules. It’s replace-on-condition. Clean and test during routine servicing, replace if readings are implausible, response is slow, or fault codes and symptoms persist after cleaning and checking for intake/EGR issues.