An SD card error is typically caused by formatting or compatibility issues. To resolve this, remove the SD card and format it using a computer. If the card is over 32GB, you will need dedicated formatting software, as standard Windows or Mac tools may not apply the correct file system. Dash cams require a specific format (typically FAT32) to ensure stable recording, proper file structure, and continuous loop recording, and incorrect formatting can lead to recording failures, freezing, or corrupt footage.