The Filter Is the Heart of Upkeep
The cylindrical filter and coarse screen in the base of the tub trap food debris. Left to clog, they cause poor cleaning and slow drainage, and slow drainage is the direct path to an E24 drain fault. Twist the filter out and rinse it weekly to biweekly, and wipe the sump area while you are there.
| Code or Symptom | Meaning | First Check |
|---|---|---|
| E15 | Base-pan anti-flood tripped | Find and fix the slow leak |
| E24 | Drainage fault | Filter, drain hose, air gap |
| E22 | Filter or drain restriction | Clean filter and sump |
| Cloudy glasses | Low rinse aid or scale | Refill rinse aid, clean arms |
Understanding E15
E15 is the anti-flood alarm. A float in the base pan has risen because water collected there, and the machine shuts off water to protect your floor. The trigger is usually a small, slow leak, from a hose connection, the pump seal, or a tub gasket, not a catastrophic failure. Tipping the unit to drain the pan and drying it will often clear the code temporarily, but the leak must be found and fixed to stop it returning.
Spray Arms, Rinse Aid and Loading
Clear the spray arm jets of debris and scale so every rack gets washed, and keep rinse aid topped up for drying and spot-free glassware. Avoid overloading or letting tall items block the arms from spinning, which leaves dishes dirty and can look like a machine fault.
Drain Hose and Air Gap
A high loop or air gap in the drain line prevents backflow. If water is not clearing, check the drain hose for kinks and the sink air gap or disposer inlet for blockage before assuming the pump has failed. Many E24 faults clear once the drain path is restored.
Bosch Dishwasher Throwing a Fault?
Book a visit or call now. Diagnostic and travel fees, if applicable, are confirmed before the appointment and before repair approval.
Frequently Asked Questions
How Do I Clear an E15 Error on a Bosch Dishwasher?
Tip the machine slightly to drain water from the base pan and dry it so the float drops. That clears the code, but E15 comes from a leak collecting in the pan, so the leak itself, often a hose or pump seal, must be found and repaired to stop it returning.
What Causes an E24 on a Bosch Dishwasher?
E24 is a drainage fault. The most common causes are a clogged filter, a kinked or blocked drain hose, or a blocked sink air gap or disposer inlet. Clearing the drain path usually resolves it.
How Often Should I Clean My Bosch Dishwasher Filter?
Every one to two weeks for typical use. A clean filter is the best defense against poor cleaning, E22 restrictions and E24 drain faults.