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How to reset the BSI unit of the Citroën C4?

Model: Citroen C4 MK 2 - Years: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Part: Warning light – error code

See other generations:
Video tutorial

To reset the BSI unit of the Citroën C5, connect a diagnostic tool to the vehicle's OBD port: this will be located on the lower left side of the dashboard, near the steering column. Once the scanner is connected, select the car model and its corresponding version; this will allow access to the stored errors in the BSI unit, which must be completely cleared.

After the reset, disconnect the scanner and check that everything functions correctly.


Updated on 22 October 2026 by ScegliAuto


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by ScegliAuto

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