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How to reset the AdBlue warning light in the Citroen C4 Cactus?

Model: Citroen Cactus MK 1 - Years 2014-2020
Part: AdBlue warning light

If the AdBlue warning light has come on in the instrument panel of our Citroen C4 Cactus, it means that the fluid in the pollution control system has reached the minimum level and, consequently, needs to be topped up. This is an extremely simple and quick operation; let's see how to proceed in this tutorial. First, we need to purchase a 10-liter canister of urea from an auto parts store. Then, we make sure that the engine is off and open the fuel door. Next, we unscrew the blue cap, insert the hose from the canister into the opening, and add the necessary amount of fluid to reach the maximum level.

Posted on 23 December 2025 by ScegliAuto

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