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johnwolf7

Mobi brake booster pressure sensor error

My 2018 Fiat Mobi with a gasoline engine is giving me fits! I keep getting an error message in the speedometer, and the braking feels really poor. I ran a scan, and it's showing an error related to the brake booster pressure sensor. It's got 168823 km on the clock. Could this be related to a brake bleeding issue? I'm starting to worry about vehicle safety!

Summary of the thread

A 2018 Fiat Mobi is experiencing poor braking and an error message related to the brake booster pressure sensor. The issue arose after the owner bled the brakes themselves, potentially causing the sensor problem. A professional diagnosis confirmed that incorrect brake bleeding led to the sensor failure, and the issue was resolved by having the brake system properly serviced.

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4 comment(s)

jakobsmith10

Whoa, sounds scary! I had something similar happen with my Opel Corsa a few years back. Brake problems are no joke. Did you recently have any work done on the brakes?

johnwolf7 (community.author)

Yeah, I bled the brakes myself last month. I followed a guide online, but maybe I messed something up. Could that really cause the pressure sensor to fail like this?

jakobsmith10

That's likely it then! I had the same issue after bleeding my brakes. A faulty bleed can definitely mess with the pressure in the brake booster. I'd suggest getting it checked out by a professional just to be safe.

johnwolf7 (community.author)

Thanks! Took it to the workshop, and you were spot on! They said the brake system wasn't bled correctly, and it caused the sensor to go bad. Cost me 90€ to fix. Appreciate the help!

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FIAT

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MOBI