Peugeot RCZ Manifold Pressure Sensor Issue

My 2010 Peugeot RCZ with a gasoline engine has an intermittently illuminated check engine light, reduced engine power, poor engine response, and higher fuel consumption. Mileage is at 215681 km. I suspect a faulty manifold pressure sensor and large vacuum leakage. Could this be the culprit?

4 comment(s)

I also drive a Peugeot RCZ and am experiencing a similar problem. I also suspect the manifold pressure sensor. Is the car idling erratically, by any chance? Have you checked for any obvious cracks or loose connections in the vacuum lines?

The idle is indeed somewhat erratic. I've visually inspected the vacuum lines, but haven't conducted a thorough pressure test. Is that where you found your vacuum leakage?

While a visual inspection is a good start, the leak might be subtle. Given the symptoms and the erratic idling, I'd strongly advise getting a professional diagnosis to pinpoint the exact location of the leak and confirm the sensor's functionality. I think that will be worthwhile.

A trip to the workshop was the best course of action. The fault was indeed a faulty manifold pressure sensor with large vacuum leakage. The total repair bill came to 235€. The sensor replacement resolved the issue and the symptoms have disappeared. I appreciate your advice!

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