If your Bosch dishwasher E25 error persists even after checking the pump, and your motor reads around 126 ohms, you’re actually very close to solving it.
This situation is common when everything looks fine, but the machine still won’t drain properly.
Quick Answer
Your pump reading (126 ohms) is within acceptable range, so the issue is most likely a partial blockage or grease buildup in the drain line, not a bad motor.
Step-by-step fix for Bosch E25 with normal pump readings
Step 1: Confirm the pump is not the issue
You already did this well.
- Pump spins ✔
- Strong whirlpool action ✔
- Resistance ~126 ohms ✔
👉 Typical range is roughly 80–120 ohms, so yours is slightly high but still usable.
Step 2: Understand what E25 really means
E25 is triggered when:
- The pump struggles under load
- Or detects abnormal resistance
👉 Even partial blockage can trigger it.
Step 3: Focus on partial drain line blockage
This is the key issue.
Even if hoses look clear:
- Grease film can restrict flow
- Fine debris (sand, food particles) can accumulate
- Internal narrowing reduces efficiency
👉 This creates back pressure, causing E25.
Step 4: Deep clean the drain hose (critical fix)
Do more than visual inspection.
- Disconnect drain hose completely
- Flush with very hot water
- Add cleaning solution (bleach or dishwasher cleaner)
- Let it soak if needed
👉 Many users find hidden buildup that isn’t visible.
Step 5: Clean connection to garbage disposal
Check:
- Dishwasher inlet on disposal
- Remove any grease or debris
👉 Even a small restriction here affects drainage.
Step 6: Re-test with strong flow
After cleaning:
- Run a drain cycle
- Observe flow speed
👉 Water should exit quickly and smoothly.
Step 7: Avoid repeated float testing
You noticed:
- Repeated float activation → E15
👉 This is normal. You’re triggering the flood protection system.
Extra tips and best practices
- Run occasional hot cleaning cycles
- Avoid grease-heavy loads
- Clean drain system every few months
- Use proper detergent to reduce buildup
Common mistakes to avoid
- Replacing pump unnecessarily
- Assuming hoses are clear without flushing
- Ignoring grease buildup
- Over-testing with float switch
FAQ
Is 126 ohms too high for the pump?
No. It’s slightly above typical but still functional.
Why does the pump seem strong but still fail?
Because flow restriction under load causes failure, not pump weakness.
Can debris really cause this?
Yes. Even small particles or grease film can trigger E25.
Conclusion
If your Bosch dishwasher shows E25 and the pump tests fine, the real problem is almost always hidden restriction in the drain system.
A deep flush of the drain hose and connections usually restores full performance without replacing parts.
Reference links
https://www.repairclinic.com/RepairHelp/Dishwasher-Repair-Help
https://www.searspartsdirect.com/diy/repair-guide/how-to-fix-a-dishwasher-that-wont-drain
