Bosch Dishwasher E24 Error Code Explained: Meaning, Causes & Fixes

 
Detailed Explanation of the E24 Error Code on Bosch Dishwashers
 
The E24 error code on Bosch dishwashers is a specific indicator that the appliance’s drainage system is not operating as intended. Essentially, the dishwasher’s control board has detected that residual water is not being properly drained from the unit during or at the end of a cycle. This alert serves as a built-in safety mechanism, ensuring that the appliance does not continue to operate when there is an abnormal amount of stagnant water present.

When the system senses that water is accumulating in areas such as the sump or the drain pathway, it triggers the E24 error to halt further operations. This precaution protects the dishwasher from potential issues like water leakage, reduced cleaning performance, or even long-term damage to the internal components.

• The error code is generated by sensors monitoring the water level within the dishwasher’s drainage area.
• It signals that the machine’s automated drainage process has encountered an issue that prevents it from expelling water effectively.
• This code is displayed on the control panel of the appliance, indicating to the user that the drainage system needs attention.

It is important to note that the indication of an E24 error alerts you to a problem strictly within the drainage mechanism, rather than other operational issues of the dishwasher. The system has been designed to ensure that the appliance does not run a cycle under conditions that could lead to inefficiency or internal damage.

 
Potential Sensor and Float Switch Malfunctions
 

• The dishwasher’s internal sensors, such as the float switch, may become faulty or obstructed by debris, leading the system to misinterpret water accumulation.
• Interruptions in the normal movement or electrical connectivity of the float sensor can cause erroneous leak detection signals.

 
Drainage System Blockages or Malfunctions
 

• Obstructions in the drain hose or filter may cause water to accumulate in areas where the sensor is located, triggering the error.
• A defective or partially obstructed drain pump can result in improper water removal, which further stresses the leak detection mechanism.
• Internal hoses or water paths may become restricted over time due to mineral deposits, affecting water flow and sensor readings.

 
Electrical and Wiring Issues
 

• Loose or damaged wiring between the sensors and the control board can lead to intermittent signals that the system interprets as a leak.
• Exposure to moisture over time may cause corrosion in connector terminals, resulting in unreliable sensor performance.

 
Internal Water Redistribution Problems
 

• The internal water channels designed to route water might develop cracks or become dislodged, allowing water to reach sensitive sensor areas.
• A faulty seal or improper alignment of components can permit small water leaks inside the unit, which are then detected by the monitoring system.