Talisman brake booster pressure sensor issue

The symptoms you describe strongly suggest a faulty brake booster pressure sensor, particularly given the error code and the recent work on the brake system. The incorrect bleeding procedure can certainly damage the ABS system and cause these sensors to fail. Have you checked the sensor connections and wiring for any obvious damage?

Thanks for the quick reply. I've visually inspected the connections and wiring; nothing jumps out as obviously damaged. Is there a reliable way to test the sensor itself before I consider replacing it? Also, could this issue affect other systems, like the ABS?

Without specialized diagnostic equipment, directly testing the sensor's output is difficult. Given the safety implications of impaired braking and the potential ABS involvement, the prudent course of action would be to have a qualified technician diagnose the root cause. Continuing to drive with diminished braking performance is risky.

Understood. I appreciate the advice. I took it to a workshop, and you were spot on. It was indeed the brake booster pressure sensor, likely damaged during a previous brake bleed. Replacement parts and labor came to 90€. Everything is working perfectly now. Thanks again!