kevinlorenz4

Modus boost pressure actuator fault

Hi, I have a 2008 Renault Modus with a gasoline engine. I'm experiencing a boost pressure actuator fault. The check engine light is on, and there's reduced engine power. Response is poor, with a whistling and loud hissing when accelerating. It even stalls sometimes, and fuel consumption is up. With 245228 km on the clock, could the electrical bypass valve be the culprit?

4 comment(s)

Hey, sounds familiar. I had something similar with my Renault Clio - like a blocked artery starving the engine. Have you checked the boost pressure sensor readings? Could be a faulty sensor messing with the actuator.

Thanks for the quick response. The boost pressure sensor seems fine according to the diagnostics, but I am not so sure anymore. Do you remember any specific symptoms that pointed you towards the actuator?

Yeah, the hissing sound was a big clue for me. It was like a punctured lung, and the engine was struggling to breathe. I took it to a workshop eventually, turned out the actuator was indeed faulty. Cost me around 250€.

Thanks a lot for the info! I'll book it in to get the actuator checked out. Your experience pretty much confirms my suspicions. Cheers!

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