Lexus IS weak brakes error codes

I experienced something similar with my Lexus IS. Could the brake booster pressure sensor be the culprit? Have you checked the sensor readings with diagnostic tools to confirm if they align with the actual brake pressure? A faulty sensor can lead to inaccurate pressure readings, resulting in reduced braking performance and triggering error messages.

A faulty brake booster pressure sensor, huh? Where is the sensor located, and do I need any special tools to check it? If it is indeed faulty, how difficult is it to replace?

The sensor is typically located on the brake booster or master cylinder. While visual inspection might reveal physical damage, diagnostic tools are essential to read the sensor's output. Given the safety implications of the braking system, it's advisable to consult a workshop for sensor testing and replacement to ensure correct installation and proper brake function. Incorrectly bled brakes can damage components, so getting a second opinion would be prudent.

Thanks a bunch for the tip! I took it to the workshop and, wouldn't you know it, the brake booster pressure sensor was kaput, probably from the incorrect bleeding. 90€ later, with a new sensor installed, my Lexus is braking like a champ again! Really appreciate the help!