meshtastic/website/docs/software/device/critical-faults.md

---
id: critical-error-codes
title: Critical error codes
sidebar_label: Critical error codes
---

The device might report these fault codes on the screen, but it will also be outputted on the device serial output. If you encounter a fault code, please post on the forum and we'll try to help.

:::note
This table is derived from the [protobufs](/docs/developers/protobufs/api#criticalerrorcode)
:::

| Name | Number | Description |
| ---- | ------ | ----------- |
| TxWatchdog | 1 | A software bug was detected while trying to send lora |
| SleepEnterWait | 2 | A software bug was detected on entry to sleep |
| NoRadio | 3 | No Lora radio hardware could be found |
| Unspecified | 4 | Not normally used |
| UBloxInitFailed | 5 | We failed while configuring a UBlox GPS |
| NoAXP192 | 6 | This board was expected to have a power management chip and it is missing or broken |
| InvalidRadioSetting | 7 | The channel tried to set a radio setting which is not supported by this chipset, radio comms settings are now undefined. |
| TransmitFailed | 8 | Radio transmit hardware failure. We sent data to the radio chip, but it did not reply with an interrupt. |
| Brownout | 9 | We detected that the main CPU voltage dropped below the minumum acceptable value |
device files 2021-04-25 14:50:52 -07:00			`---`
change ids 2021-04-25 15:21:15 -07:00			`id: critical-error-codes`
device files 2021-04-25 14:50:52 -07:00			`title: Critical error codes`
			`sidebar_label: Critical error codes`
			`---`

fixes 2021-04-25 15:03:49 -07:00			`The device might report these fault codes on the screen, but it will also be outputted on the device serial output. If you encounter a fault code, please post on the forum and we'll try to help.`
device files 2021-04-25 14:50:52 -07:00
Update critical-faults.md 2021-04-26 11:49:43 -07:00			`:::note`
			`This table is derived from the [protobufs](/docs/developers/protobufs/api#criticalerrorcode)`
			`:::`

device files 2021-04-25 14:50:52 -07:00			`\| Name \| Number \| Description \|`
			`\| ---- \| ------ \| ----------- \|`
			`\| TxWatchdog \| 1 \| A software bug was detected while trying to send lora \|`
			`\| SleepEnterWait \| 2 \| A software bug was detected on entry to sleep \|`
			`\| NoRadio \| 3 \| No Lora radio hardware could be found \|`
			`\| Unspecified \| 4 \| Not normally used \|`
			`\| UBloxInitFailed \| 5 \| We failed while configuring a UBlox GPS \|`
			`\| NoAXP192 \| 6 \| This board was expected to have a power management chip and it is missing or broken \|`
			`\| InvalidRadioSetting \| 7 \| The channel tried to set a radio setting which is not supported by this chipset, radio comms settings are now undefined. \|`
Update critical-faults.md 2021-04-26 11:49:43 -07:00			`\| TransmitFailed \| 8 \| Radio transmit hardware failure. We sent data to the radio chip, but it did not reply with an interrupt. \|`
device files 2021-04-25 14:50:52 -07:00			`\| Brownout \| 9 \| We detected that the main CPU voltage dropped below the minumum acceptable value \|`