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Data Troubleshooting

Why Am I Not Seeing Any Data?​

If you've followed the Getting Started Guide and tested your AutoPi CAN-FD Pro device during vehicle operation, but are not recording any data, this guide will help you identify and resolve common issues.

This guide is organized as a checklist, detailing potential reasons why your vehicle data might not be recorded. It is only intended for the AutoPi CAN-FD Pro device.

Common Causes and Solutions for No Data Recorded​

1. Identify the Current State of the Device​

Check the two LEDs on the side of the device. Both the green and blue LEDs should be lit. If the green LED is off and the blue LED is “breathing” or fully dimmed the device is either sleeping or hibernating. To resolve this re-plug or push the button on the side of the device to boot it up again.

For more details on LED status meanings, refer to this guide: LED and button states

2. Check the CAN Loggers​

Run the logger.status command on the device to see the status of data logger(s).

  1. If the device is connected to the Internet it can be done through the cloud terminal on AutoPi cloud.
  2. Or alternatively if you have direct SSH access How to SSH to your device to the device via LAN or VPN (for Tailscale, you can read more at this guide: How to connect to Tailscale) you can use the autopi terminal command.
  3. Or if you are nearby the device and can connect to it's local WiFi hotspot you can do it from the local admin UI on local.autopi.io. Here is a guide: Local development workflow.

Regardless of which of the above methods you use, you must run the command logger.status. The response from this command may look like this:

3. CAN bus detection​

Verify the settings of the CAN channels. Configuration of the device is done through the AutoPi cloud.

4. Nominal Voltage detection​

When the device boots for the first time, it attempts to autodetect the nominal voltage and sends the results back to AutoPi CAN-FD Pro device, where a Nominal voltage is set for your vehicle.

  • Auto-detect Voltage: This is a new feature that comes enabled by default on all AutoPi CAN-FD Pro devices. That means you don’t need to configure it manually - your device will automatically detect this value the first time it boots up. And the result is shown in Events tab. If you want to double check if this feature is enabled, Go to Devices > Choose Device > Settings > Vehicle Editor to see if the Auto-Detect Voltage is enabled.

Autodetect feature

  • Manual Configuration: If the device is unable to autodetect the nominal voltage on the vehicle, you might need to configure it manually. Go to Devices > Choose Device > Settings > Vehicle Editor > Nominal Voltage > click on the field and choose from 12V or 24V. Make sure the correct configuration is set from dropdown.

Manual configuration of nominal voltage

5. Internet Connectivity Issues​

Ensure your device is connected to the internet. If there are connectivity issues, follow the steps outlined in our 4G Internet Setup and Troubleshooting Guide.


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