selinastar25

DS3 Boost Pressure Actuator Fault

Hi, I have a 2013 Citroen DS3 diesel with 123630 km. The check engine light is on, and the engine has reduced power and poor response. I'm also hearing a whistling noise and a loud hissing when accelerating. Sometimes it even stalls at idle, and the fuel consumption is higher. I suspect a boost pressure actuator fault, possibly the electrical bypass valve. Any ideas?

A 2013 Citroen DS3 diesel exhibited symptoms of reduced engine power, poor response, a whistling noise, hissing during acceleration, stalling at idle, and increased fuel consumption. These issues were suspected to be caused by a boost pressure actuator fault, possibly involving the electrical bypass valve. The conversation suggested checking for boost leaks in the turbo system and considering the actuator as a likely culprit. Ultimately, the problem was confirmed and resolved by replacing the boost pressure actuator, restoring normal vehicle performance.

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4 comment(s)

Hello! I also have a Citroen DS3, though a slightly older model. Your symptoms sound familiar. The whistling and hissing, along with the power loss, suggest a boost leak somewhere in the turbo system. The boost pressure actuator controls the turbo wastegate, which regulates boost. A defective actuator valve could definitely cause these issues. Have you checked for any obvious leaks in the turbo hoses?

Thanks for the quick reply! No, I haven't checked the hoses yet. Is there a way to test the actuator itself to confirm it's the problem, or is it better to just replace it?

While testing the actuator might be possible with specialized tools, it's tricky without them. Given the symptoms and mileage, a defective actuator is a likely culprit. It's probably best to have a workshop diagnose the issue properly. They can confirm the actuator failure and check for any other problems in the turbo system. This would prevent further issues. Replacing the actuator will likely fix it though.

Thanks for the advice. I took it to the workshop, and you were right; it was the boost pressure actuator. They replaced it for 250€, and everything is back to normal. Appreciate the help!

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CITROEN

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DS3