Could drain hose routing or the air gap cause E25?

Yes. Verify the drain hose is not kinked, there is a proper high loop or air gap, and the garbage disposal knockout has been removed.

Bosch Dishwasher E25

Sun Sep 03 2023

Error Codes

Bosch Dishwasher E25 Error Code: What It Means and What to Check

Q: What does Bosch dishwasher E25 mean?

E25 indicates a drain pump problem—commonly a jammed impeller, mis-seated pump cover, or debris in the sump.

Q: Can too much detergent cause E25?

Oversuds from excess detergent or rinse aid can slow draining. Use HE dishwasher detergent only and reduce dosage if you see suds.

Q: When should I schedule service for E25?

If E25 returns after cleaning and reseating or you hear grinding without draining, schedule service to test the drain pump or internal check valve.

Bosch dishwasher E25 points to a drain pump problem — most often the pump is blocked, the impeller is jammed, or the pump cover isn’t seated correctly. Start with these safe checks; if E25 returns, we’ll see how Beacon can help.

What triggers Bosch E25 most of the time?

The most common causes are a jammed pump impeller (small glass, seeds, labels), a mis-seated pump cover, or debris left behind after an E22/E24 drain issue. Less commonly, the drain pump itself fails or the internal check valve is damaged.

What should you try first?

Turn power off to the dishwasher at the breaker.
Remove the lower rack and twist out the filters.
Look down into the sump for debris and locate the pump cover. Make sure it’s seated flat and locked (not popped up).
With a towel handy, carefully check the impeller opening for obstructions. Avoid sharp tools. Reseat the cover and reinstall filters properly.

Helpful tip: If you find standing water, scoop it out with a cup first so you can see into the sump more clearly.

Could the drain hose or air gap cause E25?

Yes. If the pump can’t push water out, E25 can appear. Confirm the drain hose isn’t kinked or crushed behind the cabinet, the high loop or air gap is present and clear, and (if a garbage disposal was recently installed) the disposal knockout plug was removed.

What about oversuds?

Too much detergent or rinse aid can foam and slow draining. Use HE dishwasher detergent only, avoid overfilling rinse aid, and reduce detergent if you see suds.

When should you call Beacon?

If E25 returns after cleaning and reseating the pump cover — or you hear grinding with no draining — the drain pump or internal check valve may need service or replacement. Our friendly technicians in yellow polos will pinpoint the exact cause and fix it right.

Beacon note: Beacon services electric dishwashers and does not service gas appliances.

Why choose Beacon for dishwasher repairs

Bosch-savvy technicians who service all major electric dishwasher brands
Precise diagnostics: filters, sump, pump, hose routing, and controls
Friendly local pros in bright yellow polos

Local Help

We’ll get your Bosch draining perfectly again.

Beacon Services & Appliances
(352) 726-7530 • www.BeaconSaves.com.

📍 Contact Beacon Services & Appliances
📞 (352) 726-7530
🌐 www.BeaconSaves.com.

Content Update & Editorial Review
Reviewed and updated February 1, 2026 by Chris.

Frequently Asked Questions

What does Bosch dishwasher E25 mean?

E25 indicates a drain pump problem, commonly caused by a jammed impeller, a mis-seated pump cover, or debris in the sump.

How do I clear E25 safely?

Turn power off, remove the lower rack and filters, inspect the sump, make sure the pump cover is locked flat, and check the impeller opening for debris. Reinstall the cover and filters correctly.

Could drain hose routing or an air gap cause E25?

Yes. A kinked hose, missing high loop or air gap, or a disposal knockout plug left in place can prevent proper draining and trigger E25.

Can too much detergent cause E25?

Oversuds can slow draining and contribute to drain errors. Use HE dishwasher detergent only and reduce dosage if you see suds.

When should I schedule service for E25?

If E25 returns after cleaning or you hear grinding with no draining, schedule service to test the drain pump and internal check valve.