WTG86400UC E12 error
Your Bosch WTG86400UC is showing E12. Before replacing parts, confirm the model tag matches WTG86400UC: Check the door frame, inside the door opening, or the rear panel near the exhaust. On this Bosch dryer, E12 means Heat-pump limescale or overheating from restricted airflow — clean the lint screen and heat exchanger. The steps below follow the field-service order for the WTG86400UC platform — not the generic Bosch E12 page. Cross-check part fit with WTG86400UC before ordering — use the model-specific parts diagram. If the code cleared after a reset but returned mid-cycle, treat that as a confirmed fault rather than a one-time glitch.
Fix steps
- Verify the model tag reads WTG86400UC — Check the door frame, inside the door opening, or the rear panel near the exhaust.
- Reset E12: unplug the dryer or switch off the breaker for 5 minutes, then restore power.
- Clean the lint screen, inspect the exhaust hose and exterior vent hood, and confirm electric dryers have both legs of 240V power for E12.
- Cross-check part fit with WTG86400UC before ordering — use the model-specific parts diagram.
- Run a test cycle after repair. If the code returns, use the compatible parts below or the full brand code guide.
Guided repair checklist
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Verify the model tag reads WTG86400UC — Check the door frame, inside the door opening, or the rear panel near the exhaust.
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Repair guidance is for informational purposes only. We do not guarantee that any fix will resolve your issue, and you assume all risk when following these steps. Terms & disclaimer
FAQ
What does E12 mean on a Bosch WTG86400UC?
Heat-pump limescale or overheating from restricted airflow — clean the lint screen and heat exchanger.
How do I reset E12 on a WTG86400UC?
Unplug the dryer or switch it off at the breaker for 5 minutes, then restore power and restart. If E12 returns on the WTG86400UC, the underlying fault is still present.
What part do I need for WTG86400UC E12?
Try the reset and troubleshooting steps first. E12 on the WTG86400UC is not always a failed part.
Is E12 on the WTG86400UC easy to fix?
Many owners fix this themselves with basic tools. Start with the reset and steps above, then check compatible parts below.