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XC40 Diesel Power Loss

Help! My 2019 Volvo XC40 diesel is acting up. The check engine light is on, and it feels like it has way less power than usual. Engine response is poor and I'm using more fuel. It's only done 50408 km. Any ideas? I checked for obvious things, but couldn't find anything.

A 2019 Volvo XC40 diesel experienced power loss, poor engine response, and increased fuel consumption, with the check engine light on. The issue was suspected to be related to turbo lag, possibly caused by a faulty pressure sensor or boost solenoid. Upon professional inspection, the problem was identified as a defect in the vacuum switching valve, which was repaired, restoring the vehicle's performance.

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4 comment(s)

Sounds like a boost issue. I had similar symptoms on my car. Could be a pressure sensor or a dodgy boost solenoid. Any turbo lag before the power loss?

Turbo lag, yeah, that's a good way to describe it. What does that mean exactly? And where do I find the boost solenoid to check it?

Turbo lag means the car hesitates when you accelerate. Honestly, with those symptoms on a newer car, it could be a faulty vacuum switching valve. I'd get it checked by a workshop rather than poking around yourself.

Thanks for the advice! Took it to the shop and you were spot on. It was indeed a defect in the vacuum switching valve. Repair cost was 140€. Runs like new now!

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VOLVO

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XC40