kevinbraun6

Fluence Manifold Pressure Sensor Issue

I have a 2014 Renault Fluence with a gasoline engine and 232770 km. The check engine light is on, engine power is reduced, engine response is poor, and fuel consumption is up. I suspect a faulty manifold pressure sensor, possibly a large vacuum leak in the intake system. Anyone seen this?

A 2014 Renault Fluence owner experienced issues with the check engine light, reduced engine power, poor response, and increased fuel consumption, suspecting a faulty manifold pressure sensor or a vacuum leak. Fault codes confirmed a problem with the sensor. Another Fluence owner shared a similar experience, where a significant vacuum leak was found affecting sensor readings. A workshop confirmed the vacuum leak, leading to the replacement of a cracked hose and the sensor, resolving the issue.

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4 comment(s)

I have a Fluence too, and that sounds familiar. I had similar issues. Did you check the sensor wiring for damage or loose connections before replacing the sensor? Also, have you read the fault codes? That might help pinpoint the problem.

Thanks, I visually inspected the wiring, but saw nothing. The fault codes indicate a problem with the manifold pressure sensor. Could you share more about your experience? What caused the issues with your Fluence?

In my case, the fault codes also pointed to the manifold pressure sensor. I considered replacing it myself, but the problem was more complex. I took my Fluence to a workshop. They found a significant vacuum leak affecting the sensor readings. I recommend a smoke test at a workshop.

Thanks, that confirms a specialist is a good idea. The workshop confirmed a vacuum leak. Replacing a cracked hose and the sensor cost 235€. Thanks for the advice; it was invaluable.

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RENAULT

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FLUENCE