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XC40 brake booster pressure sensor failure

My 2020 XC40 diesel is acting up at 216780 km. The brake booster pressure sensor seems to be failing, and the braking feels terrible. I'm getting an error message and the reader confirmed the error. I suspect someone improperly bled the brakes in the past. Anyone else experienced this?

A 2020 XC40 diesel experienced braking issues due to a suspected brake booster pressure sensor failure, confirmed by an error message and diagnostic reader. The problem was believed to be caused by improper brake bleeding in the past. A professional workshop diagnosed and resolved the issue by replacing the faulty sensor, restoring proper braking function.

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4 comment(s)

I had something similar with my XC40. A pressure sensor issue also caused braking problems. Have you checked the brake pedal?

What exactly did you find wrong with the brake pedal? And how did you resolve the poor braking?

I didn't check the brake pedal, a workshop did it for me. From what you've described, I think it's best if you take it to a professional workshop for diagnosis. These systems are complex, and messing with the brake system or ABS system can be very risky.

Took it to the shop, and you were spot on! They confirmed it was the brake booster pressure sensor. Apparently, someone bungled the brake bleeding previously, causing the sensor to fail. 90€ later, all sorted!

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VOLVO

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XC40