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Diesel Particulate Filter Efficiency Below Threshold Bank 1

paddyirishman
paddyirishman
in Ford Mondeo / Vignale Club

Featured Replies

Hi.

Just got this error coming up on my car (mk4 Titanium X sport 2.2). Can this be cleared with a motorway run at high revs or is the filter goosed?

The car is still driving as normal at the minute.

  • Quote


    • Author

    What does this hose actually do? 

    Everytime my car tries to regen, there is a burning smell and smoke coming from under the bonnet from the back of the engine. 

    Could the two be related? 

  • Quote

    Not too sure TBH . Seems they connect the pressure sensor to the DPF/Exhaust system.

    I just googled your fault message and that thread came up on the search.

  • Quote
    1 hour ago, paddyirishman said:

    What does this hose actually do? 

    Everytime my car tries to regen, there is a burning smell and smoke coming from under the bonnet from the back of the engine. 

    Could the two be related? 

    They do indeed connect to the DPF pressure sensor, but normally if the have burnt through you will get the EML showing on the dash

  • Quote

    definatly check the dpf pressure hoses at the dpf, so common for them to perish and break up. did one a few weeks ago on a mates car. we bodged it up by cutting off the perished bit and joined another bit of old hose that was simular bore to it.
    cleared codes, been fine since.

  • Quote

    the pipes connect to either side of dpf so the sensor can detect a pressure difference in dpf. if blocked the difference in pressure exceeds a certian limit and this triggers the regeneration process.


    you can get the hoses off ebay for around £35
  • Quote
    • Author

    Any link to the hoses so I know what to get if they are needed? 

  • Quote

    You can use 7mm internal bore  silicone fuel pipe.

  • Quote
    • Author

    Hose was in bits, my mechanic is changing it at the minute. :biggrin:

  • Quote

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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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