The word “turbidity” in Bosch E25/F25 refers to how the washer evaluates the condition of the water. The code points to that sensing function, not automatically to dirty water, detergent choice, or one failed part.
Bosch washer E25 F25 code: Bosch’s washer code list identifies E25/F25 as a turbidity sensor issue. Turbidity sensing concerns the optical assessment of wash water; it is not the same fault category as a blocked pump or slow drain.
Meaning and scope
Understand the turbidity-sensor code without confusing it with a drain restriction.
Start with the non-invasive checks
- Note whether the code appears during wash, rinse, or near the end of the program.
- Cancel the cycle normally and allow any water to drain through the controls; do not force the door.
- Check for an excessive-suds condition through the glass or at the end of the cycle, and verify that only HE detergent was used at the labeled dose.
- Power the appliance off once, wait briefly, and restore power. Treat this only as a control-state check.
- If E25/F25 returns, use the model E-Nr when arranging Bosch support because sensor access and testing are internal procedures.
Conditions that fit
- The turbidity sensor or its optical reading may be outside the expected range.
- Residue or abnormal suds can affect water conditions, but they do not prove the sensor itself is good or bad.
- Sensor wiring, connection, or control interpretation may require service diagnosis.
Avoid a wrong diagnosis
Do not follow Bosch dishwasher E25 instructions. The same characters can describe a different problem on another appliance type.
Cleaning an accessible drain filter may be normal maintenance on a model that provides one, but it is not Bosch’s definition of this washer code.
Avoid adding cleaners at random. Use only a cleaning cycle and product allowed by the owner’s manual.
Treat the outcome as a decision point. Normal operation after a corrected load, hose, detergent, or supply condition supports that external cause. The same code with normal operating conditions points back to the model-specific sensing or control path. Do not expand the test into panel removal simply because the easy checks were inconclusive.
Check the exact model before going further
Sensor placement and diagnostic access differ among Bosch washer platforms. The owner’s manual and E-Nr are essential before any model-specific conclusion.
Escalation guide
Service is appropriate when the code persists after correct detergent use and one power cycle, or when cycles repeatedly stop because the control cannot obtain a reliable reading.
When arranging support, provide the model identifier and the complete display. Mention any leak, breaker trip, abnormal heat, failed drain, or control lockout first because those details affect safe next steps.
Related Washer Code Guide pages
Use the Bosch Washer Error Codes page when the display on your model does not match this code or when you need the broader brand index.
For the next relevant check, see washer not cleaning clothes properly. Useful if the code is accompanied by residue or poor results, while keeping sensor diagnosis separate.
Frequently asked questions
Is Bosch washer E25/F25 a drain-pump blockage?
Bosch’s washer code list identifies a turbidity sensor issue. Dishwasher meanings should not be reused.
Will less detergent always clear it?
Correct dosing may address suds, but a recurring sensor code still needs diagnosis.
Official source
Bosch washer error codes: E25/F25 turbidity sensor. Use the exact model manual when it provides a narrower instruction.