# BLTouch failed to verify sensor state.octopus

**URL:** <https://klipper.discourse.group/t/bltouch-failed-to-verify-sensor-state-octopus/24900>\
**Category:** General Discussion\
**Created:** [September 23, 2025, 7:53pm UTC](https://klipper.discourse.group/t/bltouch-failed-to-verify-sensor-state-octopus/24900 "2025-09-23T19:53:53Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![mahdi](https://avatars.discourse-cdn.com/v4/letter/m/e9c0ed/32.png) [@mahdi](https://klipper.discourse.group/u/mahdi)\
**Post date:** [September 23, 2025, 7:53pm UTC](https://klipper.discourse.group/t/bltouch-failed-to-verify-sensor-state-octopus/24900/1 "2025-09-23T19:53:53Z")

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### Basic Information:

Printer Model:  
 MCU / Printerboard:  
 Host / SBC  
 klippy.log

_Fill out above information and_ _ **in all cases attach your** _ **`klippy.log` _file_** (use zip to compress it, if too big). _Pasting your_ `printer.cfg` _is **not** needed_  
_ **Be sure to check our “Knowledge Base” Category first. Most relevant items, e.g. error messages, are covered there** _

### Describe your issue:

BLTouch failed to verify sensor state

octopus pro v1.1

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<div class="post-metadata">

**Author:** ![cardoc](https://avatars.discourse-cdn.com/v4/letter/c/ec9cab/32.png) [@cardoc](https://klipper.discourse.group/u/cardoc)\
**Post date:** [September 23, 2025, 7:57pm UTC](https://klipper.discourse.group/t/bltouch-failed-to-verify-sensor-state-octopus/24900/2 "2025-09-23T19:57:26Z")

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Is this a new build or a system that worked in the past?

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<div class="post-metadata">

**Author:** ![mahdi](https://avatars.discourse-cdn.com/v4/letter/m/e9c0ed/32.png) [@mahdi](https://klipper.discourse.group/u/mahdi)\
**Post date:** [September 23, 2025, 8:07pm UTC](https://klipper.discourse.group/t/bltouch-failed-to-verify-sensor-state-octopus/24900/3 "2025-09-23T20:07:12Z")

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> [@cardoc](#):
>
> new build

Yes new build.

use cr touch for endrer 5 s1

BLTOUCH\_DEBUG COMMAND=PIN\_DOWN .PROBE DOWN

BLTOUCH\_DEBUG COMMAND=PIN\_UP .PROPE UP

HOMING.BLTOUCH failed to verify sensor state

[printer.cfg](https://klipper.discourse.group/uploads/short-url/vQVw6TCaMEbv5KYpTcP6nC5eo00.cfg) (7.5 KB)

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<div class="post-metadata">

**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\
**Post date:** [September 23, 2025, 8:21pm UTC](https://klipper.discourse.group/t/bltouch-failed-to-verify-sensor-state-octopus/24900/4 "2025-09-23T20:21:01Z")

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> [@mahdi](#):
>
> _Fill out above information and_ _ **in all cases attach your** _ **`klippy.log` _file_** (use zip to compress it, if too big). _Pasting your_ `printer.cfg` _is **not** needed_

Please post it to your next post.

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<div class="post-metadata">

**Author:** ![cardoc](https://avatars.discourse-cdn.com/v4/letter/c/ec9cab/32.png) [@cardoc](https://klipper.discourse.group/u/cardoc)\
**Post date:** [September 23, 2025, 9:22pm UTC](https://klipper.discourse.group/t/bltouch-failed-to-verify-sensor-state-octopus/24900/5 "2025-09-23T21:22:14Z")

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> [@mahdi](#):
>
> octopus pro v1.1

Which pins do you have BLTouch wired to?

> <https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-Pro/blob/master/Hardware/BIGTREETECH%20Octopus%20Pro%20V1.1-Pin.jpg>

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\
**Post date:** [November 22, 2025, 9:23pm UTC](https://klipper.discourse.group/t/bltouch-failed-to-verify-sensor-state-octopus/24900/6 "2025-11-22T21:23:00Z")

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