Bosch dishwashers display letter-and-number error codes to flag specific faults, and most point to a component issue rather than something you can reset your way out of. This guide from Vancity Appliance explains what each common code means, so you know what you’re dealing with before booking Bosch dishwasher repair Vancouver.
Quick Reference: Common Bosch Error Codes
| Code | What It Means |
| E1 / E15 | Water leak detected in the base pan (aquastop triggered) |
| E2 / E24 | Drain pump or drain hose blockage |
| E3 / E09 | Heating element not reaching temperature |
| E4 / E01 | Water inlet valve or water supply fault |
| E5 / E25 | Water flow sensor irregularity |
| E6 | Communication error between control board and display |
| E22 | Filter or drain path blocked with debris |
What Does the E15 Code Mean on a Bosch Dishwasher?
The E15 (or E1) code means Bosch’s Aquastop safety system has detected water in the base pan and shut the machine down to prevent flooding. This is a protective response to a leak rather than a fault in itself — the underlying cause is usually a failed hose connection, a cracked tub, or a worn door seal, all of which need to be located and repaired before the code will clear.
What Does the E24 Code Mean on a Bosch Dishwasher?
The E24 (or E2) code indicates the dishwasher isn’t draining within its expected time window, almost always due to a clogged filter, blocked drain hose or a failing drain pump. This is one of the more common Bosch codes and often resolves once the physical blockage is cleared, though a failed pump requires replacement.
What Does the E09 Code Mean on a Bosch Dishwasher?
The E09 (or E3) code means the heating element isn’t reaching the required temperature within the expected time, which affects both cleaning performance and dish sanitization. This typically indicates a failed heating element, though a wiring or thermostat fault can also trigger the same code.
What Does the E01 Code Mean on a Bosch Dishwasher?
The E01 (or E4) code signals a water inlet fault — either the machine isn’t receiving enough water, or the inlet valve has failed to open or close properly. Before assuming a component failure, it’s worth confirming the water supply valve under the sink is fully open, since a partially closed valve can trigger this code.
What Does the E25 Code Mean on a Bosch Dishwasher?
The E25 code relates to an irregularity in the water flow sensor, which monitors how much water enters the machine per cycle. A sensor reading outside the expected range usually means the flow sensor itself has failed or become clogged with mineral buildup.
What Does the E22 Code Mean on a Bosch Dishwasher?
The E22 code indicates that the filter or drain path is blocked by food debris or grease buildup, restricting water flow at the base of the tub. This is one of the more DIY-friendly codes to investigate. However, persistent triggering after cleaning usually indicates a deeper blockage or a pump issue.
Why Do Bosch Error Codes Need Professional Diagnosis?
Bosch’s sealed, computer-controlled system is designed to isolate faults precisely, but confirming the root cause of a code — rather than just clearing a symptom — requires diagnostic testing with the right tools. Guessing at parts based on a code alone often leads to unnecessary replacement costs, which is why Bosch-trained technicians test the specific component the code points to before recommending a repair.
Get Your Bosch Dishwasher Error Diagnosed Correctly — Book Vancouver Repair
An error code is your dishwasher telling you exactly where to look — but confirming what’s actually failed behind it takes proper diagnostic testing. Vancity Appliance provides certified Bosch dishwasher repair Vancouver, with technicians trained specifically on Bosch’s sealed system architecture, flat-rate upfront pricing and a 90-day parts and service warranty. We also offer full dishwasher repair services for other brands, plus refrigerator, stove/oven and washing machine repair across Metro Vancouver. If your dishwasher is leaking or not draining rather than showing a code, see our guides on dishwashers leaking from the bottom and dishwashers not draining.
📞 Contact us today to book your Bosch dishwasher repair appointment — most error codes are diagnosed and resolved in a single visit.