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Error code · Dishwasher

Water in the Zeolite Container – Bosch Dishwasher E:31

E:31 reports liquid water inside the zeolite container. Bosch spells out what that does: the water ruins the zeolite granules, so the whole container must be replaced. The sensor that detects it is built into that…

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Code
E:31
Appliance
Dishwasher
Brand
Bosch
Warranty
30-day workmanship

What E:31 means

E:31 reports liquid water inside the zeolite container. Bosch spells out what that does: the water ruins the zeolite granules, so the whole container must be replaced. The sensor that detects it is built into that container, so it cannot be changed on its own. Three causes are on record: overfill from a leaking inlet valve, excess foam, and water left inside after the machine was laid down or tilted for earlier work.

Common causes of E:31

  • Inlet valve leaking and overfilling the tub
  • Foam from the wrong soap or too much detergent
  • Water trapped in the machine after it was tipped or laid on its back
✓ One safe check you can try

1. Check what you put in the dispenser, including the amount of detergent and rinse aid. 2. Make sure no ordinary dish soap is being used; it makes far too much foam for a dishwasher. 3. Close the supply valve under the sink if you suspect the inlet valve is overfilling. 4. Call us before running another cycle.

! Why to stop there
  • Another cycle can push more water into the container and turn a partial problem into a full replacement.
  • The container comes as a unit, so a wrong guess about the cause is costly.
  • Tipping the machine to drain it can send water exactly where it should not go.
Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.
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Other Dishwasher codes

E:01Bosch Dishwasher E:01: Cycle Ended Early, Heater Relay or Pump Unconfirmed E:30Bosch Dishwasher E:30, Voltage Too High and the Machine Shut Down FBosch Dishwasher F on an Older Display (Water Filling) 2HBosch Dishwasher 2H: Long Cycle Warning on Older Displays 1Bosch Dishwasher Service Test Result 1: Aqua Sensor 2Bosch Dishwasher Service Test Result 2: Heating Group 4Bosch Dishwasher Service Test Result 4: Water Filling 8Bosch Dishwasher Service Test Result 8: Temperature Sensor
E:31E:31 questions
Can the zeolite container be dried out?

Bosch states that water ruins the granules, so replacement is the documented repair. Drying the container at home is not a reliable fix, and it can leave you with poor drying again.

What is the most common cause?

Foam from the wrong soap is one of the simplest to avoid, and a failing inlet valve is the one that needs repair. We check both so the new container is not damaged.

Is it worth the repair on an older machine?

The container is a significant cost, so it depends on the dishwasher's age and condition. We explain what we find, and you see the written price before committing.

Book a visit

Still seeing E:31?

A technician diagnoses it on site and gives you the price in writing before any work starts.

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