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How to repair the anti-theft system of the Ford Focus

Model: Ford Focus MK 2, Focus 2 - Years: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
Part: Warning light – error code

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Video tutorial

In this guide we will see the instructions that will allow us to repair the anti-theft system of the Ford Focus, with the following error codes: U0140, U0155, U0001, U0131. In order to check the error codes on the anti-theft system, it is necessary to use a diagnostic software, to be connected to the OBD port of the ECU; we then proceed to reset the errors after solving the problem related to the anti-theft system, as shown in the video.

We then verify that all errors have been reset on the ECU, confirming the operation of the anti-theft system.


Posted on 13 June 2025 by ScegliAuto


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by ScegliAuto

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