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How to repair the anti-theft system of the Ford Focus
Model: Ford Focus
MK 2, Focus 2
- Years 2004-2011
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
Video tutorial
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