Talisman Boost Pressure Actuator Failure

I have encountered a problem with my 2020 Renault Talisman diesel. The check engine light is on, and the engine power is reduced. Acceleration is poor. I also hear a whistling noise, and a loud hissing sound when accelerating. The engine occasionally stalls at idle. Fuel consumption is also higher. Is this a known issue?

4 comment(s)

Sounds like a boost leak. I had similar symptoms with my Talisman. It was the boost pressure actuator valve. Like a small hole in a water pipe, it messes everything up.

Thank you for your reply. Could you please provide more detail? Was it difficult to diagnose?

Not really. The workshop identified it pretty quickly using a smoke test. Electrical bypass valve defective. Replacing the boost pressure actuator sorted it. Best to get it checked, could be dangerous.

Thank you for the information. I took it to a workshop, and you were right. It was indeed the boost pressure actuator. The repair cost 250€. The car is now running smoothly again.

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