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Bosch Dishwasher E24 Error Code: Not Draining? Bosch's Fixes

Fix soonUpdated Checked against Bosch US Owner Support

Also shown or searched as: E:24, E-24

E24 on a Bosch dishwasher means it cannot drain properly. Turn it off, then check that the drain hose under the sink is not kinked, that a newly installed garbage disposal has had its knockout plug removed, and that the air gap and the filters are clear. Reset the dishwasher afterward; if E24 returns, call a technician.

What to try first

Safety: Water left in the dishwasher can be very hot, Bosch warns, so switch it off, unplug it and let it cool before you reach in. Switch the garbage disposal off before you touch its inlet.

  1. 1

    Switch off and let the water cool

    Turn the dishwasher off and unplug it or switch off its breaker. Bosch warns that water left in the machine can be very hot, so give it time before you reach in.

  2. 2

    Check the drain hose in the sink cabinet

    Look along the drain hose as far as you can see it under the sink. Straighten any kink or pinch, and check that it rises in a high loop under the counter or runs to an air gap. Bosch's manual says a missing high loop lets debris flush back into the hose and block it.

  3. 3

    Make sure a new disposal is open to the dishwasher

    If the hose connects to a garbage disposal that was recently installed, Bosch says to make sure the plug has been removed from the disposal's dishwasher inlet. With the disposal switched off, loosen the hose clamp, pull the hose off and look inside the inlet. If the plug is still there, follow the disposal maker's instructions or ask the installer to remove it.

  4. 4

    Clear the air gap and test the hose over a bucket

    If your sink has an air gap, lift off its cap and clear any food inside. Then, as Bosch's error-code list describes, disconnect the drain hose at the sink end over a bucket, clear anything stuck in it, reconnect it, restore power and run a rinse cycle to test.

  5. 5

    Rinse the filters and press on the pump cover

    Take out the lower rack, twist the filter out and wash it under running water with mild soap and a soft brush. Before it goes back, press on the small pump cover beneath it; Bosch's E24 page asks you to make sure it is not loose.

  6. 6

    Reset the dishwasher

    With power back on, hold Reset 4 Sec. or Start for about four seconds. Bosch says the dishwasher then pumps out the water left inside and cancels the cycle after about a minute; open the door and press On/Off. Button names vary by model, so check your owner's manual if yours differ.

Most likely causes of E24

  1. 1. A kinked or crushed drain hose (most common)

    The dishwasher was just installed or pushed back into its opening, or the hose in the sink cabinet is bent flat against a pipe or the cabinet wall.

  2. 2. A new garbage disposal with its knockout plug still in place (common)

    E24 started right after a disposal was installed or replaced, and the dishwasher has not drained properly since.

  3. 3. A clogged air gap, hose end or sink drain (common)

    Water spits out of the air gap cap beside the faucet, or the kitchen sink drains slowly as well.

  4. 4. Food debris in the filters, or a pump cover that has worked loose (common)

    Dirty water stands around the filter at the bottom of the tub, and the filters have not been cleaned in a while.

  5. 5. No high loop in the hose, so sink debris flows back into it (less common)

    The hose runs straight down to the drain with no loop up under the counter and no air gap, and E24 returns soon after the hose was cleared.

  6. 6. Floss, hair or string wound around the drain pump (less common)

    The pump runs in short bursts or hums, yet little water leaves, even with the hose and filters clear.

When to call a pro

  • E24 returns after the reset and you can find no blockage: the hose, air gap, filters and disposal inlet are all clear. Bosch's next step at that point is its customer support.
  • Water pours freely into the bucket but the sink backs up when the dishwasher drains: the house drain needs a plumber, not a dishwasher repair.
  • The pump runs or hums but the tub stays full.
  • The hose is split or needs replacing, or reaching it means pulling the dishwasher out of its opening.

What a E24 repair costs

$80–$400

HomeGuide's 2026 national ranges, parts and labor: a new drain hose $80 to $180 and a new drain pump $100 to $400. Clearing a kink, a disposal plug or a dirty filter yourself costs nothing; minimum service fees run $70 to $130.

Source

What E24 means, and how it differs from E25

Bosch's US support pages describe E24 as the dishwasher not draining properly. The signs Bosch lists are water pooling in the bottom after a cycle, the machine pausing or stopping mid-cycle, and gurgling or humming. A Bosch technician sheet sums it up in three words: draining not possible.

E25 is the narrower code. Bosch ties it to the drain pump itself being blocked, or to the pump cover being loose or missing. So E24 sends you along the whole route the water takes, from the bottom of the tub through the hose to the sink, while E25 points at the pump.

New disposal, new E24

One cause on Bosch's list catches people out after a kitchen update. A new garbage disposal comes with a knockout plug sealing the inlet where a dishwasher hose attaches. If the hose goes on without that plug being knocked out, the water has nowhere to go and E24 follows. Bosch's E24 page names it, and the newer Bosch use and care manual lists a still-plugged disposal first when water is not draining.

Reading Bosch's checklist

Two phrases on Bosch's E24 page can confuse. It asks you to check that the inlet hose is not kinked or damaged; for a drain error, the hose that matters is the drain hose, which Bosch's error-code list calls the drain pump hose. Check both while you are in the sink cabinet.

It also mentions the siphon connection. That is Bosch's term for the spigot on the sink plumbing where the drain hose clamps on. Bosch's instructions for other markets have you loosen the clamp, take the hose off, clean both the hose and the spigot, and check for drips after you put it back.

Why E24 can come back a day later

The newer Bosch manual adds a check that is easy to skip: the drain hose needs a high loop under the counter. Without it, dirty water and debris from the sink can run back down the hose and block it again. On the AppliancePartsPros forum, one owner who flushed the hose found it clogged again from debris left in the filter area, so clean the filters at the same time as the hose.

What a technician will check

  • The full length of the drain hose, including the section behind the dishwasher that you cannot see from the sink cabinet.
  • The drain pump and its shaft for wound-in floss, hair or string, and whether the impeller turns freely.
  • Hose length and loop height against Bosch's installation limits. A Bosch technician sheet for one older model (SHX5AVF5UC) lists a hose no longer than 150 inches with a 20-inch drain loop, installed no higher than 43 inches.
  • The connectors between the drain pump and the controls; on the AppliancePartsPros forum, one owner traced a repeat E24 to a loose connector.
  • The house drain line, when the dishwasher pumps strongly into a bucket.

What fixed it for other readers

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Questions people ask about Bosch E24

Can I run my Bosch dishwasher with an E24 code?

Not until it drains. The cycle stops or pauses when the water cannot get out, and dirty water sits in the bottom. Sponge out what you can, work through the checks, and only then start another cycle.

What is the difference between E22 and E24 on a Bosch?

Bosch's error-code list ties E22 to a blocked filter first, with the pump, the hose and the air gap after it. E24 is the general drain fault, and Bosch's E24 page opens with the hose and the sink connection. The home checks overlap, so it is worth doing all of them.

How much does it cost to fix a Bosch E24 error?

Often nothing, when the cause is a kink, a disposal plug or a dirty filter. When a pro is needed, HomeGuide's national figures put a new drain hose at $80 to $180 and a new drain pump at $100 to $400.

Sources