The short answer: Bosch dishwashers report faults as E-codes, and the common ones are readable. E15 is the base-pan leak sensor (Aqua Stop), E24 is a drainage problem, E22 is a clogged filter, and E09 is a heating fault. Several of these start with something you can check yourself, like a filter or drain hose, before they become a service call. On cooktops and ovens, the issues are induction and heating faults; HomeConnect helps monitor but does not replace hands-on diagnosis.
About Bosch Appliances
Bosch, part of the BSH group, is one of the most widely installed premium kitchen brands, and in Brookville homes the dishwasher is where it shines. Bosch dishwashers are engineered to run quietly and efficiently, which is also why owners notice immediately when one stops and shows a code. Beyond dishwashers, we regularly service Bosch induction cooktops, wall ovens, and appliances tied into the HomeConnect app. The engineering is solid and repair-friendly, and most faults are targeted fixes with genuine OEM parts rather than reasons to replace.
The useful thing about Bosch is that its dishwashers publish real, readable E-codes. Unlike brands that surface only a symptom, a Bosch dishwasher tells you which system tripped, which shortens diagnosis and, for a few codes, lets you resolve the issue yourself before a technician is needed.
Common Bosch Repairs We See
On dishwashers, the leading calls are leaks that trip the Aqua Stop and show E15, drainage problems showing E24, filter blockages showing E22, and heating faults showing E09 where dishes come out wet or the water never gets hot. We also see spray-arm blockages, detergent-dispenser faults, and door-latch issues. On induction cooktops, the recurring problems are zones that will not power, cut out under load, or fail to detect a pan, usually pointing to a coil, cooling fan, or sensor. On wall ovens, we see heating-element failures, temperature sensor faults, door hinge wear, and control-board issues. HomeConnect calls are often connectivity rather than appliance faults.
Bosch Dishwasher E-Code Table
These are real, published Bosch dishwasher E-codes. Each points to a specific system, and the first three below often start with a check you can do yourself. Note the exact code before you call so Parts needs and availability are confirmed after model-specific diagnosis.
| Code | What It Means | Likely Cause & First Steps |
|---|---|---|
| E15 | Water in the base pan (Aqua Stop anti-flood) | A leak has reached the base sensor and the machine has locked into drain mode. Tip the unit back briefly to drain the pan, but the leak must be found. If E15 returns, there is an active leak needing service. |
| E24 | Drainage fault | The machine cannot drain. Clean the filter, check the drain hose for kinks, clear the sink or disposer connection and any air gap. If it persists, the drain pump or impeller is blocked or failing. |
| E22 | Filter or self-cleaning fault | The filter assembly is clogged and water is not circulating or draining freely. Remove and rinse the coarse and fine filters in the base of the tub, then rerun. Recurrence points to circulation. |
| E09 | Heating fault (flow-through heater) | The heating element or its circuit is not warming the water. Dishes come out wet or cold and drying fails. This is a component fault that needs testing and replacement. |
For a deeper walkthrough of these and other Bosch dishwasher codes, see our full Bosch E fault codes guide.
A large share of E22 and E24 calls come down to a filter that has not been cleaned or a drain connection that is partly blocked, including the classic case of a new disposer whose knockout plug was never removed. Before you book, pull and rinse the filters and check the drain path. If the code clears, you have saved a visit. If it comes back, that is real information that helps us diagnose the pump or circulation system quickly.
Maintenance That Prevents Faults
Most Bosch dishwasher faults are preventable. Clean the filter assembly in the base of the tub regularly, since it catches food and is behind many E22 and E24 codes. Run a dishwasher-cleaner or descaling cycle periodically, because Nassau County water is hard and scale fouls the heater and slows drainage, which contributes to E09. Keep the spray arms clear of debris, use rinse aid so drying works and the sensor reads correctly, and wipe the door seal so it closes cleanly. Check the fill and drain hoses occasionally for kinks or seepage, which heads off the leaks that trip E15.
On induction cooktops, keep the vents and cooling-fan area clear so the electronics do not overheat and cut zones out, and wipe spills promptly. On wall ovens, run the cleaning cycle as designed and keep the door seal intact so heat is not lost. On HomeConnect, keeping the app and appliance firmware current and the Wi-Fi stable prevents most connectivity complaints, which are not appliance faults at all.
When to Call a Technician
Some Bosch codes are yours to try first: rinse the filter for E22, clear the drain path for E24, and drain the base pan for a one-off E15. Call for service when E15 returns after you clear it, since that means an active leak, when E24 persists after the filter and drain are clear, pointing to the pump, when E09 shows and dishes stay wet, when an induction zone will not power or keeps cutting out, or when a wall oven will not reach temperature. Any water on the floor, burning smell, or a code that keeps returning should be looked at rather than run again.
We diagnose Bosch with genuine OEM parts and the correct service procedures, whether it is a dishwasher, an induction cooktop, or a wall oven. We serve Brookville and the North Shore of Long Island, and every repair carries our Written warranty terms for eligible completed repairs. Diagnostic and travel fees, if applicable, are confirmed before the appointment and before repair approval. See our Bosch repair page, or book a dishwasher repair or cooktop repair directly.