Arkana brake booster pressure sensor error

Hello, I had a similar issue with my 2018 Opel Insignia. Same symptoms: error message related to the braking system and diminished braking performance. In my case, it turned out the brake system had not been bled correctly, leading to sensor malfunction. Is there a chance your brake system was recently worked on?

Bled incorrectly, eh? Hmmm, the brakes were indeed serviced recently. What exactly went wrong on your Opel?

With the Opel, incorrect bleeding introduced air into the hydraulic brake system, confusing the sensor and causing the incorrect readings. I would suggest taking your Arkana to a qualified mechanic to check the brake booster pressure sensor and the entire braking system for air. It’s a vehicle safety issue.

Thanks for the help! Took it to a shop and you were spot on. Improper bleeding caused the sensor to fail. Replaced the sensor, bled the system properly, and all is good. Cost me 90€ for the sensor. Appreciate the advice!