# Cartographer Error: Section 'scanner' is not a valid config section

**URL:** <https://klipper.discourse.group/t/cartographer-error-section-scanner-is-not-a-valid-config-section/25357>\
**Category:** General Discussion\
**Created:** [December 13, 2025, 8:57pm UTC](https://klipper.discourse.group/t/cartographer-error-section-scanner-is-not-a-valid-config-section/25357 "2025-12-13T20:57:56Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![eastwest06](https://avatars.discourse-cdn.com/v4/letter/e/76d3ee/32.png) [@eastwest06](https://klipper.discourse.group/u/eastwest06)\
**Post date:** [December 13, 2025, 8:57pm UTC](https://klipper.discourse.group/t/cartographer-error-section-scanner-is-not-a-valid-config-section/25357/1 "2025-12-13T20:57:56Z")

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### Basic Information:

Printer Model: N/A (bench testing new setup)  
 MCU / Printerboard: SKR Pico  
 Host / SBC: OrangePi zero 2w  
 klippy.log

[klippy (1).log](https://klipper.discourse.group/uploads/short-url/bFd5Pa9Xa8FEgQ4pPBWWhRZKrz6.log) (5.5 MB)

### Describe your issue:

I’m having trouble setting up my Cartographer probe. Cartographer 3D’s setup info and help section leave a lot to be desired.

[Havok846](https://klipper.discourse.group/u/havok846) posted about this same thing back in May. He said he figured out that an install file was placed in the wrong folder. I’m hoping he can tell me which install file was in which folder and where it needed to be moved to.

…

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**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:** [December 13, 2025, 10:13pm UTC](https://klipper.discourse.group/t/cartographer-error-section-scanner-is-not-a-valid-config-section/25357/2 "2025-12-13T22:13:52Z")

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You only got that error until you extended Klipper with cartographer. (Line 41789)  
After that you get the error

```auto
mcu 'mcu': Unable to connect
Once the underlying issue is corrected, use the
"FIRMWARE_RESTART" command to reset the firmware, reload the
config, and restart the host software.
Error configuring printer

```

After that, you removed the cartographer extension, and the error reappeared.

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**Author:** ![eastwest06](https://avatars.discourse-cdn.com/v4/letter/e/76d3ee/32.png) [@eastwest06](https://klipper.discourse.group/u/eastwest06)\
**Post date:** [December 14, 2025, 3:02am UTC](https://klipper.discourse.group/t/cartographer-error-section-scanner-is-not-a-valid-config-section/25357/3 "2025-12-14T03:02:31Z")

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I don’t think I’m seeing what you’re seeing in the log.

If you’re talking about relabeling “cartographer” as “scanner” that’s because I get other errors like “Option ‘sensor’ is not valid in section ‘cartographer’“ if I label the MCU and section as “cartographer”. The info I’ve found indicates that is due to “cartographer” being the outdated label.

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**Author:** ![3dcoded](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/3dcoded/32/20297_2.png) [@3dcoded](https://klipper.discourse.group/u/3dcoded)\
**Post date:** [December 14, 2025, 1:21pm UTC](https://klipper.discourse.group/t/cartographer-error-section-scanner-is-not-a-valid-config-section/25357/4 "2025-12-14T13:21:07Z")

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Hi @eastwest06 ,

I would ask this on the Cartographer Discord.

> **[Join the Cartographer 3D Discord Server!](https://discord.com/invite/EFSwpureHz)**
>
> The community for Cartographer3D. | 5344 members

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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:** [February 12, 2026, 1:21pm UTC](https://klipper.discourse.group/t/cartographer-error-section-scanner-is-not-a-valid-config-section/25357/5 "2026-02-12T13:21:27Z")

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