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Bosch Dishwasher E04 error code

Discussion in 'Appliances' started by markwidgery, 14 Sep 2020.

  1. markwidgery

    markwidgery

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    Location:
    Oxford
    Country:
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    6yo Bosch Exxcel Aquastar 6.5L repeatedly showing the E04 error. Seems to get most of the way through a wash cycle before error occurs.

    According to advice on this page I checked and cleaned the spray arms, and found nothing blocking any of the holes. I have also checked the drain filter and impeller which is clear. Drain is not kinked and working fine. Turned off for >20m at plug to reset multiple times. When running a test cycle with dishwasher empty I opened to check and noticed that the water is cold even after the detergent drawer has opened, running on an intensive cycle.

    According to all the advice the issue is a faulty flow sensor (like this one I think), but I'm concerned that the water is not heating up at all and if something else is the problem. Any ideas or do I need to contact a pro, or just bite the bullet and buy a new one? TIA
     
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  3. sircerebus666

    sircerebus666

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    The error code does indicate a faulty flow sensor , as you have checked all the arms and found nothing I would replace it

    You will probably find that the cold water is linked to the flow sensor and replacing it will solve this
     
  4. leegsi

    leegsi

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    Check its draining away ok.

    The waste can get blocked where it meets the rest of the plumbing.
     
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