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Engine Malfunction

Bef
Bef
in Ford S-Max Club

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Got a 2010 S-Max that’s coming up with an “engine malfunction” message on the dash and won’t start. Have tried a new battery but this didn’t change anything. Have connected to a friend’s OBD reader but they said they can’t gain access. Any ideas what could be going on?!

  • Quote


    Sounds like it could be the infamous instrument cluster fault.

    Give the top of the dashboard a good couple of thumps with your hand just above the instrument cluster and see if there is any change.

  • Quote
    • Author
    17 minutes ago, unofix said:

    Sounds like it could be the infamous instrument cluster fault.

    Give the top of the dashboard a good couple of thumps with your hand just above the instrument cluster and see if there is any change.

    Have tried this and it’s changed nothing. Thanks for the suggestion though!

  • Quote
    • Like 1

    You need to use a multimeter and measure the resistance of both MS and HS canbus systems at the OBDII port.

    Each Canbus should measure 60 Ohms.

     

    OBDII port.jpg

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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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