How Bosch E Codes Work
Bosch builds a base-pan flood sensor and a set of self-diagnostics into its dishwashers, and the E series codes are how the machine reports what it found. A code names the system involved rather than the single broken part, so an E15 tells you the leak sensor tripped, not which hose or seal let water into the pan. That is why we treat a code as a starting point and confirm the actual fault by testing before replacing anything.
Most Bosch faults in Cherry Hills Village homes fall into three buckets: water is getting in where it should not, water is not draining out, or the machine is not heating. The codes below map cleanly onto those categories.
Common Bosch Codes at a Glance
| Code | Points To | Typical Fix |
|---|---|---|
| E15 | Leak sensor tripped, water in base pan | Find the leak, dry the pan, replace the failed hose or seal |
| E24 / E25 | Drainage blocked or restricted | Clear filter and hose, free the check valve or replace the pump |
| E22 | Filter clogged, water not clearing | Clean filter and sump, verify drainage |
| E09 | Flow-through heating element | Test and replace the heating element or pump-heater |
| E01 / E02 | Control or heating relay fault | Test wiring, replace control board if confirmed |
What to Do, and When to Call
Write down the exact code along with the model and serial number from the door edge. For E24, cleaning the mesh filter in the base of the tub and checking that the drain hose under the sink is not kinked resolves many cases. An E15 leak code should not be run repeatedly, since water continues to reach the pan and can damage the pump. When a code persists, we read it, trace the water path or test the element, and repair with model-specific genuine OEM parts under our warranty.
Bosch Dishwasher Showing a Code?
Book a diagnostic visit. Diagnostic and travel fees, if applicable, are confirmed before the appointment and before repair approval.
Frequently Asked Questions
What Does E15 Mean on a Bosch Dishwasher?
E15 is the anti-flood response. Water has reached the sensor in the base pan and the machine has shut the fill valve and started draining to protect your floor. Tipping the unit to empty the pan clears it temporarily, but the leak that filled the pan still needs to be found and repaired.
Is a Bosch E24 Code Serious?
E24 means the dishwasher is not draining. It is usually a clogged filter, a blocked drain hose, or a stuck check valve rather than a failed part, so it is often an inexpensive fix. If the drain pump itself has failed, we test it and replace it with a model-specific Bosch pump.
Should I Keep Running a Bosch Dishwasher That Shows an Error?
No. A leak code like E15 in particular means water is where it should not be, and repeated cycles can damage the pump or your cabinetry. Note the code, leave the machine off, and book a diagnostic so we can confirm the fault and repair it correctly.