According to the CAN specifications there should be a resistance between CAN-LOW and CANHIGH. Normally the gateway has this resistance however if you would like to connect to a device “on bench/on a table”( bypass connection without a gateway) then you should use a resistor between the “Abrites Diagnostics for VAG” and the separate device itself (e.g. ECU, dash, immobilizer etc.).

For that reason you have the option to choose what resistance to use (None, 75 Ohm, 100 Ohm or 10 Kilo ohm). The default value used is 120 Ohm. Normally there should not be any issues; however should an issue appears you can try changing the CAN resistance.