Error Code: E20 Difficulty: Hard
Problem: Unexpected heating.
How to Fix E20 Error (Step-by-Step)
- Turn off the dryer and unplug it from the wall outlet for safety.
- Wait for at least 10 minutes to allow all electronic components to fully discharge and reset.
- While waiting, thoroughly clean the lint filter by removing all visible lint and washing it with warm, soapy water to remove any residue.
- Check the dryer’s exhaust vent hose at the back and the vent opening outside your home for any blockages or restrictions. Clear any lint buildup you find.
- After 10 minutes, plug the dryer back in and attempt to run a cycle.
- Turn the appliance off, wait about 2 minutes, then turn it back on.
- Check for simple blockages (lint screen, drain path, or filter) and clean anything you find.
Recommended Replacement Part
What to Check Next on This Bosch Dryer
Use these checks before ordering parts for Bosch dryer E20. They keep the diagnosis tied to the appliance instead of turning the page into a reset-only guide.
- Unplug the dryer before touching the lint housing, rear vent, lower service area, or any wiring.
- Clean the lint screen, moisture sensor bars, condenser area if equipped, and the full vent path so airflow problems do not imitate part failures.
- Run a short timed cycle with a light load and note whether the fault appears immediately, after heating starts, or near the end of the cycle.
- If the fault returns with clean airflow, inspect the part categories below using the full model number from the dryer tag.
- Stop repeated test cycles if you smell heat, see moisture near electrical areas, or hear grinding from the drum drive.
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Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
Read Editorial Standards →When It’s Better to Replace Than Repair
Dryer repairs are often worth it for small parts, but repeated heating, motor, drum, or control failures can point toward replacement.
Confirm gas vs electric, venting, voltage, doorway clearance, and laundry-space dimensions before ordering.
For repair parts, verify exact fit with the full dryer model number before buying; these links are general replacement-appliance shopping options.
- [OK]Thermal fuse or heater failures keep returning
- [OK]Belt, roller, or motor repairs exceed unit value
- [OK]Door switch or control issues stack with other faults
- [OK]Older dryer has long dry times even after vent cleaning
Recommended Dryer Replacement Options
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