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How to Change the Cerium Bag on a Peugeot 208

Model: Peugeot 208 MK 1, A9 - Years: 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Checks and maintenance

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Video tutorial

This video demonstrates that replenishing the diesel additive tank on the Peugeot 1st series is not straightforward. The additive, known as 'cerium', is found in a bag located under the vehicle, in a container that must be unscrewed from its housing, then removed and completely replaced, not just refilled.

These bags are readily available on e-commerce sites, such as recar-autoricambi.myshopify.com, by searching for 'cerium for PSA group'. It costs £139.00 with free delivery. Once the bag is changed, you will need to reset the instrument panel, which is also not simple.

The YouTuber in the video does this with a tester, so you may need to do it via the EOBD socket and an OBD11 module to clear the error P15B3.


Updated on 30 August 2026 by ScegliAuto


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by ScegliAuto

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