Bosch Dryer E03 error code
Dryer
Bosch dryer error code E03 means: Condensation drain hose is blocked or kinked. This guide covers how to reset the code, the most common causes, step-by-step troubleshooting, and replacement parts that typically resolve E03.
Safe to keep using?
Use caution
This issue may worsen during use — limit operation and address promptly.
- • Turn off the water supply before disconnecting hoses.
Likely causes
Many codes resolve with cleaning, resetting, or reconnecting.
Check: Power-cycle the appliance and check for obvious blockages or loose connections.
Est. cost: $0–$0
Wear or electrical failure of an internal part.
Check: If basic checks fail, the faulty component likely needs replacement.
Est. cost: $0–$100
What it means
Condensation drain hose is blocked or kinked.
How to fix it
- Unplug the dryer or turn off power at the breaker before inspecting any components.
- Reset Bosch E03: leave power off for 5 minutes, restore power, then restart. Confirm whether E03 returns.
- Check the most common cause for E03: Condensation drain hose is blocked or kinked.
- Inspect hoses, connections, and visible wiring for damage, clogs, or loose fittings.
- If a reset and basic checks don't clear the code, use our lookup tool for AI-powered diagnosis or contact a qualified technician.
- Reassemble, restore power, and run a test cycle. If E03 returns, the faulty component likely needs replacement.
Call a pro when: Call a technician if you smell burning, see sparking, hear grinding from the motor, or the code returns after replacing the suspected part.
FAQ
What does E03 error code mean on a Bosch dryer?
Condensation drain hose is blocked or kinked.
What does Bosch E03 mean?
Condensation drain hose is blocked or kinked.
How do I reset Bosch dryer E03?
Unplug the dryer or switch it off at the breaker for 5 minutes, then restore power and restart. A reset clears a stored E03 after a glitch, but the code will return if the underlying fault is still present.
What part do I need for Bosch E03?
Not always — some E03 errors are caused by user-fixable issues like clogs or unbalanced loads. Try the troubleshooting steps first.
Can I fix Bosch error E03 myself?
Many E03 errors can be fixed DIY if you're comfortable with basic tools. Start with the reset and steps above. If the issue involves electrical components or the code returns after replacing parts, call a professional.
Do I need a replacement part for E03?
Not always — some E03 errors are caused by user-fixable issues like clogs or unbalanced loads. Try the troubleshooting steps first.
Bosch E03 on specific models
Other Bosch Dryer codes
Prevent this problem next time
- Follow manufacturer maintenance schedule
- Address small issues before they worsen
Sources
Manufacturer meaning
Condensation drain hose is blocked or kinked.
FixApplianceCode guidance
Start with basic checks for Bosch E03 before ordering parts.
Source type: Part database
Source: ModelPartFinder + FixApplianceCode editorial
Last reviewed: 2026-08-24
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
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