Fredde Posted April 9, 2016 Share Posted April 9, 2016 just got my self a Ford Transit Connect -08 1,8 tdci. One morning it didnt start and the immobiliser flashes error code 23. After googling I got "23 - ECU ID mismatch (duff ECU)" I have had a company to rematch my key with the ECU, the programing worked and the key info was saved. But the error code remained and the car didnt start. Can I fix this problem using a other ECU and its matchning key from another Transit Connect of right year? Can anyone confirm what the error code means? Quote Link to comment Share on other sites More sharing options...
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