: INPA needs to see "Ignition: ON" and "Battery: ON" (indicated by black circles on the main screen) to communicate with most modules.

Modern BMW DMEs are very sensitive to voltage. If the battery voltage drops below 12V during cranking, the DME self-check can fail, throwing this code.

But if you are reading this, you are not here to celebrate INPA. You are frustrated. You have plugged in your K+DCAN cable, fired up your old Windows XP or Windows 10 laptop, clicked the battery icon, clicked the ignition icon... and then you saw it: