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How to Top Up the FAP Additive on a Citroen C3

Model: Citroen C3 SY, SX - Years: 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
Part: Diesel particulate filter

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Video tutorial

In this video tutorial, you can see how to top up the FAP fluid on a Citroen C3 by following a procedure that will allow you to work independently if you are already experienced. As this type of intervention is not suitable for everyone, it is advisable to consult an authorised workshop to carry out the procedure, especially if you are not able to do it yourself.

First, lift the car, remove the tank, and connect the Cerina bottle hose using the appropriate kit to restore the optimal level (see illustrative video). Once filled to the correct level, it will be necessary to update the system using the diagnostic tool to reset the light.


Updated on 14 June 2026 by ScegliAuto


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by ScegliAuto

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