What is the BLTouch Sensor? Before diving into the troubleshooting process, let's take a moment to understand the BLTouch sensor's role in 3D printing. The BLTouch is a type of auto-levelling sensor that measures the distance between the printer's nozzle and the print bed.. My printer have started to get "BLTouch failed to verify sensor state" When I start up the printer and then run home all, the probe works fine. When I start a print and the printer is ready to start printing, then theBL touch get this messatge. I got I new BL touch to day, but I have the same result. I hope you can help me. //Mikael.
If you get the problem message BLTouch failed to verify sensor state, you can try a few things to fix it. Check the connections: You should start by checking the wires.. Troubleshooting If you are sure the wiring of the BL-Touch is correct and every attempt to probe with the BL-Touch reports "BLTouch failed to verify sensor state" then it may be necessary to add pin_up_touch_mode_reports_triggered: False to the bltouch config section. The BL-Touch v3 and many clones require this setting.