Step-by-Step DIY Fix Guide
- SAFETY: Unplug the dryer from the wall outlet.
- Locate the moisture sensor bars — two stainless steel strips on the inner front wall of the drum.
- Wipe the sensor bars with a cloth dampened with white vinegar or rubbing alcohol to remove fabric softener residue.
- Allow to dry, restore power, and run a test cycle.
- If E25 persists, call Bosch Customer Support at 1-800-944-2904.
If the warning comes back after restart
- If airflow still seems weak after the basic checks, the fan path or a deeper obstruction becomes more likely.
- If the warning returns immediately after a clean restart, the sensor or wiring path becomes more likely than a one-time glitch.
- If the base or floor area dries out but the code returns during the next cycle, moisture is still reaching the leak-sensor area.
What This Error Means
Error E25 on your Bosch dryer means: The dryer has detected a fault in the moisture sensor circuit. The moisture sensor detects when laundry is dry and signals the control board to end the cycle. The machine's self-diagnostic system has detected this condition and stopped the current cycle to prevent further damage or unsafe operation.
The most frequent cause is failed moisture sensor bars (metal strips on the drum interior). Work through the causes listed below in order — starting with the simplest and most accessible.
Bosch's official guidance classifies E25 as a technician-only fault. The components involved require electrical testing equipment and safe internal access. Contact Bosch Customer Support at 1-800-944-2904.
Electronics faults prevent the dryer from operating safely and the machine is right to stop. A 30-second power reset resolves occasional transient faults. If the code returns, the component needs physical diagnosis — there is no further DIY path.
Most Likely Cause by Symptom
The Bosch dryer may stop, pause, or refuse to complete the cycle normally.
Likely cause: Failed moisture sensor bars (metal strips on the drum interior)
Check first: SAFETY: Unplug the dryer from the wall outlet.
The warning may return immediately because the appliance is detecting an internal fault.
Likely cause: Heavy fabric softener or dryer sheet residue coating the moisture sensor bars
Check first: Locate the moisture sensor bars — two stainless steel strips on the inner front wall of the drum.
Common Causes
- Failed moisture sensor bars (metal strips on the drum interior)
- Heavy fabric softener or dryer sheet residue coating the moisture sensor bars
- Wiring fault between moisture sensors and control board
- Control board fault in the moisture sensor input circuit
What Not to Do
- Do not use abrasive cleaners on the sensor bars — they scratch the surface and impair sensing
- Do not ignore E25 — inaccurate moisture sensing means laundry is either under-dried or the drum runs too long
Model and Display Variation Notes
Model-family notes
- Bosch dryer display wording and code formats can vary by series.
- If your model behaves differently, check the owner manual before trying any deeper maintenance step.
Display and panel differences
- Panel wording can vary by series, so confirm the exact code pattern before buying parts.
Parts, Tools and Service Options
Service option
Bosch service visit if the warning returns after the basic checks are complete.
Manual and model check
Check your exact model and manual before ordering any Bosch dryer parts.
Common parts
- Moisture sensor assembly ($20–$50)
This section stays service-first because the page points more strongly toward support or professional repair than a routine parts purchase.
When Not to Keep Troubleshooting
Sensor bars are clean but E25 persists — sensor or wiring replacement needed
How to Prevent It Recurring
- Wipe moisture sensor bars with white vinegar every 3 months to remove fabric softener buildup
- Reduce dryer sheet use — they coat the sensor bars and degrade moisture sensing accuracy
Related Error Codes
E24
The dryer has detected a fault in the drum temperature sensor circuit. This sensor monitors heat inside the drum and regulates the heating cycle.
E08
The dryer has detected an electronics fault in the NTC (negative temperature coefficient) sensor circuit. The NTC sensor monitors drum or exhaust temperature to control the heating cycle.
Extra notes
- This page is based on Bosch support material and stays conservative where model-specific guidance may vary.
- The goal is to help you identify safe first checks before you move into parts, service, or model-specific manual lookup.
Source and model notes
Last reviewed: 2026-04-07
Based on: Based on Bosch support material and edited into consumer-safe guidance for the exact code family on this page.
Model coverage note: Bosch dryer code meanings can vary by series, control panel, and model family, so use this page as a safe starting point rather than a replacement for the model-specific manual.
Important: FixThisError is an independent guide, not the manufacturer. Use your model-specific manual when the panel wording or behavior differs.
Always disconnect power before inspecting appliances. If unsure, contact a licensed appliance technician.