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How to reset the AdBlue warning light using the OBD2 port?

Model: (Various brands) Various
Part: AdBlue warning light

The AdBlue warning light typically illuminates when it is necessary to top up the fluid in the tank; however, it can also light up due to a decoding issue. In such cases, to reset the warning light, connect a tester to the OBD2 port. The OBD2 port on this vehicle is located at the end of the dashboard on the driver's side, behind a cover. Simply move the cover to access the port and connect the tester. Then, turn on the ignition and begin the reset procedure by navigating to the settings menu.

Updated on 20 September 2026 by ScegliAuto

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