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Focus Mk3 1.6 TDCi P0557 brake booster pressure sensor

Rich52
Rich52
in Ford Focus Club

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Focus Mk3 1.6 TDCi P0557 brake booster pressure sensor DTC problem.

Can anyone point me in right direction as to where this sensor is located and a link to buy one (in UK) or a part number.

Many TIA

  • Quote


    The sensor is fitted in the brake booster, directly under the master cylinder/reservoir.

    Part number - 5229485

    Genuine Ford Brake Servo Vacuum Sensor 03/2018- RHD 5229485 | eBay

  • Quote
    • Like 1

    This photo shows it on my Mk4, your one will be similar. It's the thing that the white connector is attached to.

    DSC_0941.JPG.b4aa6992787ed1ad7883455975c09136.JPG

  • Quote
    • Like 2
    • Author

    Brilliant guys - many thanks.
    Rich

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

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      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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