Bosch dryer error code
E12
Overheating
The dryer is running too hot, often because airflow is restricted.
Try these free fixes first
Unplug the dryer before opening any panel.
- Clean the lint screen.
- Make sure the outside vent is not blocked.
- Let the dryer cool down, then restart.
Still showing E12?
If it keeps overheating with clear filters and vent, call a technician to check the heating system and airflow path.
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Questions people ask
What does E12 mean on a Bosch dryer?
E12 on a Bosch dryer means: overheating. The dryer is running too hot, often because airflow is restricted.
How do I fix Bosch dryer error E12?
Clean the lint screen. Make sure the outside vent is not blocked. Let the dryer cool down, then restart.
When should I call a repair technician?
If it keeps overheating with clear filters and vent, call a technician to check the heating system and airflow path.
Related dryer codes
Samsung ClgDryer: Vent is cloggedSamsung C90Dryer: Vent mostly blockedLG d80Dryer: Dryer vent is restrictedLG F0Dryer: Lint filter not insertedWhirlpool AFDryer: Restricted airflow, check ventGE Check VentDryer: Dryer vent is blockedSource: Bosch official support · Reviewed 2026-10-01