Parts for your 2007 Holden Captiva 7-Map sensor

2007 Holden Captiva 7 MAP Sensor — what it does and how to look after it

Based on the Holden Captiva CG (2006–2011) workshop manual, GM Service Information (SI), and Bosch/Delphi engine management documentation, the 2007 Holden Captiva 7 is fitted with a MAP sensor. On the 2.0‑litre diesel it’s commonly referenced as the boost pressure/MAP sensor, while the 2.4‑litre four‑cylinder and 3.2‑litre V6 petrol engines also use a MAP signal (often alongside a MAF) for load calculation, altitude compensation, and diagnostic plausibility. Typical related fault codes cited in GM SI include P0106, P0107, P0108 (MAP range/performance) and, on the diesel, P0237/P0238 (boost pressure sensor). So yes—this part is relevant on a 2007 Captiva 7.

In simple terms, the MAP sensor tracks the absolute pressure in the intake manifold so the ECU can work out engine load. That info fine‑tunes fuel delivery and ignition timing on petrol models and manages turbo boost and EGR behaviour on the diesel. It also helps the Captiva adjust to changing elevations around Aotearoa and Australia without breaking a sweat. If the MAF drops out, many GM strategies lean on the MAP signal as a fallback, so a healthy reading here is crucial.

When a Captiva’s MAP sensor is unhappy, it often shows up as:

• Sluggish performance, rough idle, hard starting, or poor fuel economy
• Black smoke on the diesel, or hesitations on petrol models
• Check engine light with codes like P0106–P0108, P0237–P0238

Maintenance is straightforward. On the diesel, oily soot can build up in the sensor port—pop it out gently and clean the tip with an electronics‑safe or MAF‑safe cleaner, avoid poking the sensing element. On petrols, contamination is less common but still possible. Inspect the connector, wiring, and the sensor’s O‑ring seal, replace the seal if it’s flattened or cracked. During servicing, a quick scan‑tool check is gold: at key‑on/engine‑off the MAP should read roughly ambient (~100 kPa at sea level). A healthy petrol at warm idle typically shows around 25–40 kPa (good vacuum). A turbo diesel will hover near ambient at idle and climb well above 100 kPa under load. If cleaning doesn’t sort it and live data stays wonky—or the same codes keep returning—fit a quality OEM‑spec sensor. Replacement is usually a one‑bolt job, refit and tighten to manufacturer spec, clear codes, and verify readings on a test drive. Sorted.

Where is the MAP sensor on a 2007 Holden Captiva 7?

On the 2.0‑litre diesel, it’s mounted on the intake manifold or charge pipe near the throttle body and looks after boost pressure as well as manifold pressure. On the 2.4 and 3.2 petrol engines, it’s typically fixed to the intake manifold. Expect one electrical plug and a small retaining bolt.

Can the MAP sensor be cleaned or should it just be replaced?

It can often be cleaned—especially on the diesel where soot can clog the port. Use an electronics‑safe cleaner and let it dry fully before refitting. If the same codes or dodgy readings persist, replacement with an OEM‑quality unit is the way to go.

What readings should a healthy MAP sensor show?

Key‑on/engine‑off is about ambient pressure (~100 kPa at sea level). A warm‑idle petrol sits roughly 25–40 kPa. A turbo diesel will be near ambient at idle and climb to 150–220 kPa under load, depending on altitude and tune. Always compare against manufacturer data and local conditions.