E24 on a Bosch dishwasher means the machine could not confirm that water drained. A clogged filter or blocked air gap can trigger it just as easily as a hardware fault. Start with the checks that do not require tools.
What the code is telling you
Bosch shows E24, or a blinking light pattern on some older models, when the control board runs the drain step and does not see the expected result. The cause can be a clogged filter, kinked hose, blocked air gap or disposal connection, failed pump, or wiring problem.
It is not automatically a dead pump. Bosch uses E25 for a more pump-specific blocked or failed pump condition. E24 is the broader water-did-not-leave fault.
The usual culprits, most common first
Clogged filter. Food debris packs into the cylindrical filter and flat mesh screen. Water cannot move quickly enough and E24 appears.
Blocked air gap or kinked hose. The hose can pinch behind the machine. An air gap beside the faucet can collect grease and food residue.
Disposal knockout still in place. A drain connected to a garbage disposal needs its plastic knockout removed during installation. Check this after a recent disposal replacement.
Drain pump failure. If the filter, hose, air gap, and disposal connection are clear, the pump may be worn or jammed. A hum during the drain step is useful information.
Control board or wiring. A sensor, harness, or board output can create a false E24, although this is less common.
The two safe checks
Pull out the bottom rack. Twist the cylindrical filter counterclockwise and lift it out, then lift the flat mesh screen underneath. Rinse both, scrub lightly if needed, and reinstall them.
Under the sink, check that the drain hose is not kinked or pinched. If there is an air gap, remove the cap and clear visible debris. Run a short cycle and see if E24 returns.
If it comes back after the filter and hose are clean, stop there. The next steps can involve pulling the machine, testing pump voltage, and entering Bosch diagnostic mode. Guessing at a pump or board costs more than a clear replacement decision.
Where a technician takes it
A technician can run the service diagnostic, review fault history, test the pump, verify voltage, inspect the impeller and wiring, and test board outputs. That separates a blocked drain path from a failed component.
When to call
If the filter, hose, air gap, and disposal connection are clear and E24 remains, this is not a repair we take on. A qualified Bosch dishwasher technician can provide the next diagnosis. This page is information only and does not offer Bosch dishwasher service.
For more homeowner-safe troubleshooting guides, visit the Home Service Pros information resource.
Straight answer
The dishwashers we do not take.
We do not repair dishwashers from LG, Samsung, Bosch, KitchenAid, Whirlpool, or Jenn-Air. Any model, any year.
It is not a knock on the machines. It is the parts pricing. What a circulation pump, a control board, or a touch panel costs on one of these, set against what the dishwasher sold for new, turns the repair into a bad buy for you more often than not. We would rather tell you that here than charge you $99 to say it in your kitchen.
Everything else from these brands we still fix: refrigerators, ranges, ovens, cooktops, washers, and dryers. We repair dishwashers from every other brand.
- Serviced: Fisher & Paykel, Miele, Cove, Asko. We also service every other residential and commercial brand.
- Not serviced: LG, Samsung, Bosch, KitchenAid, Whirlpool, Jenn-Air dishwashers
- Still serviced on those brands: refrigerators, ranges, ovens, cooktops, washers, dryers