WTG86400UC E03 error
Your Bosch WTG86400UC is showing E03. 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, E03 means Condensation drain hose is blocked or kinked. The steps below follow the field-service order for the WTG86400UC platform — not the generic Bosch E03 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 E03: 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 E03.
- 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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Recommended next action
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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 E03 mean on a Bosch WTG86400UC?
Condensation drain hose is blocked or kinked.
How do I reset E03 on a WTG86400UC?
Unplug the dryer or switch it off at the breaker for 5 minutes, then restore power and restart. If E03 returns on the WTG86400UC, the underlying fault is still present.
What part do I need for WTG86400UC E03?
Try the reset and troubleshooting steps first. E03 on the WTG86400UC is not always a failed part.
Is E03 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.