Obtaining CAN data from the vehicle's on-board computer is constantly progressing, but for older vehicle models some parameters may not be present in the standard connection or may not be present at all.
If CAN Flow or AdBlue is missing, but you see CAN Level data, it means that this data is not being received from the on-board computer with the existing CAN bus connection.
🚨 Connecting an additional CAN line does not always guarantee that additional CAN data can be obtained, as limitations may be set in the on-board computer.