Bosch Dishwasher Error Codes
Bosch error codes are useful diagnostic clues, but the exact model and symptom still matter before replacing any part.
Before You Reset
Take a photo of the display and model label. Drain, leak and heating faults can require very different diagnostic paths.
Common Codes
This is a practical general guide. Always confirm the exact Bosch model before performing model-specific troubleshooting or replacing components.
What it means
The dishwasher has detected a fault involving the internal heater in the heat pump assembly.
Safe check
This is not usually a homeowner-level repair. Record the code and model number and avoid repeated resets if the error returns.
When to call
The heating circuit, heat pump assembly, wiring or control system may require electrical diagnosis.
What it means
Bosch associates this code with limescale buildup in the heat pump.
Safe check
If your model and local water conditions support it, follow Bosch cleaning and descaling instructions for your exact dishwasher.
When to call
If the code returns after proper maintenance, further diagnosis may be needed.
What it means
The dishwasher is detecting a problem with incoming water flow, filling or the flow-meter system.
Safe check
Confirm the water supply is on and the inlet hose is not visibly kinked or damaged.
When to call
If water supply is normal but the code returns, the flow meter, inlet system, wiring or controls may need testing.
What it means
The leakage protection system has detected water in the base of the dishwasher.
Safe check
Turn off the dishwasher and shut off its water supply. Do not keep restarting it.
When to call
The source of the leak and the base safety system should be inspected before continued use.
What it means
The dishwasher is having trouble receiving or controlling incoming water.
Safe check
Check that the inlet hose is not visibly kinked or damaged and confirm the water supply is open.
When to call
Recurring errors may involve the inlet valve, flow system, pressure sensing, wiring or electronics.
What it means
The dishwasher is detecting insufficient water flow or an abnormal water level.
Safe check
Confirm the water supply is on and check the inlet hose for visible restrictions.
When to call
If supply is normal but the code remains, the filling system may need further diagnosis.
What it means
Bosch associates this code with a blocked, clogged or faulty drain pump.
Safe check
Stop the dishwasher and avoid forcing repeated drain cycles if the pump is humming or not moving water.
When to call
The pump, wiring, blockage or control circuit may require inspection.
What it means
The dishwasher is not draining correctly. Bosch lists blocked filters, drain-path restrictions and pump-cover issues among possible causes.
Safe check
Check the filter and visible drain hose for debris, kinks or restrictions, following the owner manual for your model.
When to call
If the dishwasher still will not drain, the pump, hose, installation or control system may require diagnosis.
What it means
The drain pump may be blocked, or its cover may be loose or missing.
Safe check
With the dishwasher safely off, inspect the filter area and pump cover only as described in the owner manual. Be careful of sharp debris.
When to call
If the pump area is clear and the error returns, the drain pump or related electrical system may need testing.
What it means
The dishwasher is detecting that the house power supply voltage is too low.
Safe check
Do not disassemble the dishwasher. If the code repeats, the incoming electrical supply should be checked.
When to call
An electrician may need to verify supply voltage before appliance-level diagnosis continues.
Safe Troubleshooting
Water supply, visible hose kinks, accessible filter condition, obvious debris and information shown on the display.
Water in the base, internal electrical testing, heater or heat pump diagnosis, wiring work or recurring drain-pump faults.
Bosch Dishwasher Repair
See our dishwasher repair service page or send us the code, model number and a photo for service in Toronto and the GTA.
Bosch Dishwasher FAQ
E15 means the dishwasher's leakage protection system has detected water in the base. Shut off the water supply and have the source of the leak diagnosed.
E24 indicates a drainage problem. Filters, drain hoses, the pump cover, drain pump or installation may be involved depending on the model and condition.
No. Error-code definitions and diagnostic procedures can vary by model and generation, so the exact model number matters.
No. A reset may clear a temporary fault, but recurring codes should be diagnosed instead of repeatedly cleared.
Book a Repair
A few quick details help us understand the appliance, the problem and what may be needed before the visit.
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