Diagnosis and Solution for Bosch SMS46KI01I Dishwasher E24 Error

⚠️ WARNING / SERIOUS RISK. This appliance operates with critically dangerous components (High Voltage, Temperatures, or Gas). Improvised DIY repairs of critical devices can be fatal or prohibited by law. Physical intervention requires qualified specialized technicians to issue compliant safety certificates. ReeFix provides this diagnosis EXCLUSIVELY for educational and informational purposes.

IF water remains in the tub and the Bosch SMS46KI01I dishwasher does not drain

• Quick checks (user-level):
  1. Unplug the dishwasher for safety.
  2. Check and clean the filters: Remove the filter assembly (coarse filter, fine filter, microfilter) at the bottom of the tub. This is the most common cause of the E24 error, resolving the problem in 60-75% of cases. Food residues, glass fragments, or other debris often block the water passage.
     • Bosch Dishwasher Filter Assembly
  3. Inspect the external drain hose: Check that the hose behind the dishwasher is not bent, twisted, or kinked.
  4. Check the household drain: Ensure that the wall drain or sink trap, to which the dishwasher is connected, is not clogged.

IF after quick checks the E24 error persists or the pump makes abnormal noises

• Key signs/indicators:
  • Pump hums but does not drain: The pump is trying to work, but it is blocked (impeller obstructed) or has an internal mechanical fault.
  • No noise from the pump: Suggests an electrical problem with the pump or a lack of power from the control board.
• Causes and probabilities:
  1. Drain pump impeller obstruction (35-45%): Small objects such as seeds, toothpicks, or crockery fragments can get stuck in the pump impeller, preventing it from rotating.
  2. Drain pump faulty (25-30%): The pump motor is burnt out, the bearings are seized, or it has suffered an internal failure.
     • [Bosch SMS46KI01I Dishwasher Drain Pump](https://www.ebay.it/sch/i.html?_nkw=Dishwasher+Drain+Pump+Bosch+SMS46KI01I&mkcid=1&mkrid=724-53478-19255-0&siteid=101&campid=5339148621&tool