The Bosch dishwasher E24 error code means that the machine is experiencing a draining issue and cannot pump the dirty water out of the tub. You can usually fix this quickly by cleaning out the filter assembly or clearing a blockage in the drain pump or the sink connection.
⚠️ SAFETY FIRST: Always unplug the dishwasher or turn off its circuit breaker at the electrical panel before reaching into the sump or disconnecting any hoses.
What Causes the Bosch dishwasher E24 error
When your digital display flashes the Bosch dishwasher E24 error, it means the main control board has detected abnormal resistance on the drain pump or a complete lack of water flow. The most frequent triggers for this specific drainage failure include:
- Loose or missing pump cover: Bosch dishwashers have a unique design that requires a small white plastic cover to be securely snapped over the drain pump impeller inside the sump. If this cover is loose, removed, or improperly seated, the pump cannot create a vacuum, immediately triggering the error.
- Clogged main filter: A thick accumulation of food particles, grease, or broken glass in the cylindrical mesh filter at the bottom of the tub will physically block water from reaching the pump.
- Jammed pump impeller: Small, hard debris like fruit seeds, unpopped popcorn kernels, or toothpicks can slip past the filter and physically wedge the pump’s impeller blades, stopping it from spinning.
- Kinked or clogged drain hose: The ribbed plastic hose connecting the dishwasher to your sink drain might be pinched behind the unit or clogged with thick grease sludge.
- Blocked air gap or garbage disposal: If the connection at your sink or garbage disposal is obstructed by food waste, the dirty water has nowhere to go and will back up into the tub.
Tools You Will Need for This Repair
To properly diagnose and clear the Bosch dishwasher E24 error, gather these basic household items before you begin:
- A sponge and a small bucket or bowl (to manually remove standing water).
- Heavy-duty work gloves (to protect your fingers from hidden broken glass).
- An old toothbrush and warm soapy water.
- A Torx T20 screwdriver (sometimes required to remove the pump cover on specific older models).
How to Fix Bosch Dishwasher E24 Error Step-by-Step
You can almost always restore proper drainage and permanently fix the Bosch dishwasher E24 error by following these actionable troubleshooting steps:
- Bail Out the Water: Open the dishwasher door and pull out the bottom rack. Use your sponge and bucket to soak up and remove as much standing water as possible so you can see the filter area clearly.
- Clean the Mesh Filter: Twist the top of the cylindrical filter counterclockwise and pull the whole assembly out. Scrub the fine metal mesh thoroughly under your sink faucet with warm water and your toothbrush.
- Inspect the Pump Impeller: Look down into the circular hole where the filter was. Locate the white plastic pump cover on the left side of the sump. Pry it off using a spoon (or unscrew it). Wear your gloves and carefully feel around the impeller blades for any hidden debris like toothpicks or fruit pits.
- Secure the Pump Cover (Crucial Step): Once the impeller is clear and spins freely with a slight magnetic “click,” push the white pump cover back into place until you hear it “snap” securely. If it is not locked in perfectly, the pump will not work.
- Check the Drain Hose: Look under your kitchen sink to ensure the ribbed drain hose is not bent or kinked. If it connects to a garbage disposal, run the disposal for a few seconds to clear any internal food clogs.
How to Reset a Bosch Dishwasher
After cleaning the filter and securing the pump cover, you must reboot the computer to clear the Bosch dishwasher E24 error from the internal memory. Close the door and press and hold the “Start” button for approximately 3 to 5 seconds until the display shows “0:01”. Close the door and let the machine run its 60-second automatic drain cycle. Once the clock hits “0:00”, turn the dishwasher off and then back on to verify the error is gone.
When to call a professional?
If you have completely cleaned the filter, ensured the pump impeller is free of debris, verified the white pump cover is locked tight, and checked your sink plumbing, but the Bosch dishwasher E24 error still persists at the start of every cycle, you might have a failing drain pump motor or a faulty main control board. Because testing the motor requires checking live voltage with a multimeter, it is strongly recommended to contact a certified local appliance technician to complete the repair safely.