# My printer keeps shutting down, need help with debug

**URL:** <https://klipper.discourse.group/t/my-printer-keeps-shutting-down-need-help-with-debug/22139>\
**Category:** General Discussion\
**Created:** [February 21, 2025, 11:35pm UTC](https://klipper.discourse.group/t/my-printer-keeps-shutting-down-need-help-with-debug/22139 "2025-02-21T23:35:31Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![nefelim4ag](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/nefelim4ag/32/2387_2.png) [@nefelim4ag](https://klipper.discourse.group/u/nefelim4ag)\
**Post date:** [February 21, 2025, 11:52pm UTC](https://klipper.discourse.group/t/my-printer-keeps-shutting-down-need-help-with-debug/22139/2 "2025-02-21T23:52:43Z")

</div>

Well, according to logs, both `sb2209` and `scanner` show timeout, at the same time.

```auto
Timeout with MCU 'sb2209' (eventtime=622.707328)
Transition to shutdown state: Lost communication with MCU 'sb2209'
Timeout with MCU 'scanner' (eventtime=622.707328)

```

So, looks like a CAN wiring/power issue.

Btw, sounds similar to [New Voron instance lost communication with EBB (can bus)](https://klipper.discourse.group/t/new-voron-instance-lost-communication-with-ebb-can-bus/22104)

Hope it helps.

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