> For the complete documentation index, see [llms.txt](https://docs.macchina.cc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.macchina.cc/product-documentation/a0-docs/troubleshooting.md).

# Troubleshooting

## SavvyCAN Connection

Follow the quick start guide to connect to SavvyCAN.

{% hint style="danger" %}
This should be done while A0 is powered on but not connected to a vehicle, such as through the USB cable.
{% endhint %}

Go to Send Frames->Fuzzing, click start fuzzing and then stop fuzzing to send random CAN frames.

![](https://1875989339-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Lhg5aaQ-eiSLOcDoH85%2F-MFHJVTaRwpeEbdKsc28%2F-MFHPUbnX3MPCU95ktss%2FAnnotation%202020-08-21%20140437.png?alt=media\&token=a9a4252d-f54f-4788-abf8-c298ce960d2e)

Back in the main window, the frames sent by fuzzing should be listed.

![](https://1875989339-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Lhg5aaQ-eiSLOcDoH85%2F-MFHJVTaRwpeEbdKsc28%2F-MFHPii1RBlb9lsI-1Iz%2FAnnotation%202020-08-21%20140456.png?alt=media\&token=8ec60526-dbea-4c44-bb0e-504690fe6b18)

#### View CAN Traffic in a Vehicle!

After this step you're ready to move your A0 to a vehicle and connect to it using the same steps as above (you may want to enable Listen Only to avoid any accidents at first).