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Focus St170 Decat

Adlad
Adlad
in Ford Focus Club

Featured Replies

Hi

I have recently decat my Focus St170 however now the engine management light has come on. I heard about chiping the second lamba sensor but can't find one. Can anyone help.

Cheers

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  • Quote
    • 1 month later...


    Hi

    I have recently decat my Focus St170 however now the engine management light has come on. I heard about chiping the second lamba sensor but can't find one. Can anyone help.

    Cheers

    Ad

    Hi i had same problem with mine,replacing lambda can sometimes cure it. There's one in front of cat and one after it cost about £75 each. I have a Bluefin Superchip and you can read any diagnostic codes with this and also reset the management light. Chip costs around £275 and is a handheld device that you plug into diagnostic port under steering wheel,its a simple D.I.Y job. Hope this is helpful,good luck...

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    The "Digestive"

    • The Digestive Forum Roundup (24th May - 31st May 2026)

      Steve ·
      The Digestive Forum Roundup (24th May - 31st May 2026) We hope this email finds you well and enjoying your week. As always, our forum has been buzzing with activity, so we’ve compiled the highlights for you. Plenty of interesting discussions are taking place, especially around the Ford Focus and Fiesta models. Starting off with the Focus, many members have been discussing issues with the Emergency Call System, particularly in the Mk4 model. PLB raised concerns about persistent malfunctions, a se
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