sebastianschulze6

Peugeot 3008 boost pressure issue

I'm writing about a potential issue with my 2020 Peugeot 3008 Hybrid. The check engine light is on, engine power is reduced, and engine response is diminished. There's a whistling noise and a loud hissing sound during acceleration. Sometimes the engine stalls at idle, and fuel consumption is higher than usual. The vehicle has 30134 km on the odometer. I suspect a fault with the boost pressure actuator, possibly a defective electrical bypass valve. Could this be the turbo wastegate or just a pressure sensor? Any advice on diagnosing this problem?

The 2020 Peugeot 3008 Hybrid experienced issues such as a check engine light, reduced engine power, diminished response, whistling and hissing noises during acceleration, engine stalling at idle, and increased fuel consumption. The suspected cause was a fault with the boost pressure actuator, possibly due to a defective electrical bypass valve. After diagnostics, it was confirmed that the boost pressure actuator was faulty, and replacing it resolved the issues, restoring the vehicle's performance.

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4 comment(s)

Hey, I've got a 3008 too, and that sounds familiar. I had something similar happen a while back. Check for boost leaks around the turbo. A small leak can cause all sorts of weirdness. Did you check for any error codes?

When you experienced a similar issue, did it also manifest with engine stalling and increased fuel consumption? Also, by 'error codes,' do you mean reading the diagnostic trouble codes (DTCs) using an OBD-II scanner? Is the problem more likely to be a faulty actuator or a leak in the system?

Yeah, the stalling and fuel consumption were definitely part of it. By error codes, I meant those DTC things from a scanner. Honestly, at this point, it's hard to say if it's the actuator or a leak. My suggestion would be to take it to a workshop. They'll be able to pinpoint the exact problem much faster than we can guess here.

I brought the vehicle to a trusted local mechanic. After running diagnostics, they confirmed the boost pressure actuator was indeed faulty due to a defective electrical bypass valve. The repair cost was approximately 250€, and the car is now running smoothly again.

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PEUGEOT

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3008