Bosch Dishwasher Error Codes: E01 Through E27 Explained
Bosch built-in dishwashers report faults as a two-character code — a letter "E" followed by two digits — shown on the control panel display or, on older models without a digital readout, as a specific pattern of blinking lights.
This hub covers every Bosch dishwasher fault code documented on this site so far, from the common drain and filter faults (E22, E24, E25) through the more serious leak, heating, and electrical faults (E15, E09, E27, E01). Each code links through to its own page with the models it applies to, what actually causes it, numbered steps you can try yourself, and a clear line for when the job needs a licensed technician instead.
How to read the display
On most 300, 500, 800, and Benchmark series Bosch dishwashers built since roughly 2008, a fault shows up directly as "E" plus two digits on the digital display or status light strip along the top edge of the door — for example E15 or E24. Bosch's own troubleshooting guidance groups these by the system they point to: fill and flow codes (E14), drain codes (E22, E24, E25), heating codes (E09, and sometimes E01), and electrical supply codes (E27). A handful of older or entry-level models without a text display instead flash a combination of indicator lights, and the exact blink pattern is model-specific enough that it's worth checking your unit's use-and-care manual rather than guessing from a general chart.
Clearing a code is usually a two-step process: fix whatever the page for that code describes, then either press and hold Start for a few seconds or cut power at the breaker for a minute to force the control board to re-check its sensors on the next cycle. If the same code returns immediately after a fix that should have worked, that's a strong signal the underlying part — not just the symptom — needs a technician's attention.
Every Bosch code on this site
| Code | What it means | Severity |
|---|---|---|
| E15 | Aquastop leak detected in base pan, inlet valve locked shut | High |
| E24 | Draining too slowly — filter, hose, or air gap blocked | Medium |
| E09 | Heating element circuit open — no continuity, can't heat water | High |
| E14 | Water inlet flow meter not registering fill flow | Medium |
| E22 | Aqua-sensor sees dirty water — filter almost always clogged | Low |
| E25 | Drain pump impeller jammed or pump cover loose | Medium |
| E27 | Supply voltage below the minimum operating threshold | Medium |
| E01 | Control fault (heating, pump, or dryer motor circuit — varies by model) | High |
No code showing, just a symptom?
Some Bosch faults are easier to look up by what the dishwasher is doing rather than the exact letters on the display. These symptom pages cover the same underlying issues across brands, including Bosch:
- Dishwasher Not Draining
- Dishwasher Not Filling With Water
- Dishwasher Leak Detected / Water Under the Unit
- Dishwasher Not Heating, Drying, or Sanitizing
- Dishwasher Won't Start
- Dishwasher Blinking Lights With No Error Code Shown
What Bosch repairs typically cost
Built-in premium brands like Bosch tend to sit toward the higher end of general dishwasher repair ranges, mainly because of parts availability and labor time. Industry cost guides (Angi, HomeGuide, Forbes Home) put most common fixes — a clogged drain pump, a door latch, a water inlet valve — around $150–$400 including labor, with a control board replacement running $200–$600 installed. See the full cost breakdown and sources on the homepage before assuming a code means an expensive repair — several of the codes above (E22, E24, E01's simpler causes) are commonly cleared for the cost of nothing more than a filter cleaning.