Bosch Dryer Error Codes — Complete List

Your ventless Bosch dryer talks in E-codes, and most of the everyday ones — the fluff-filter messages, the door warning, the moisture-sensor nudge — you can resolve yourself with a few minutes of safe, unplugged checks. The heating and electronics codes belong to a technician after a single reset.

• E01 (E02) E01 and E02 are your dryer telling you the fluff filter needs attention — almost always lint buildup or the filter not fully seated, occasionally residue left by liquid fabric softener.
• E03 E03 is a drainage warning: condenser water can't get away, usually because the condensate hose is kinked or blocked, or the siphon is clogged.
• E04 E04 is the overloading warning — too much laundry for the drum to process. Split the load into smaller batches and it usually clears.
• E12 E12 is the tricky one: official US text links it to heat-pump limescale buildup on condenser models, and to overheating from restricted airflow on others. Start by cleaning the airflow path.
• E16 E16 is the door message — the machine believes the door opened mid-cycle. Close it firmly, make sure nothing's caught in the seal, and start again.
• E63 E63 flags the heating circuit. Try the reset once and inspect only what you can see safely — the heating element itself is mains territory.

Don't see your code?

Covers condenser and heat-pump tumble dryers. The same fault can display under slightly different code names depending on market (US vs. EU), so match the fix to the message you're actually seeing and confirm the code against your manual.

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