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Error code reference

Bosch Dryer Error Code E:02

Main heating circuit

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What the E:02 error code actually means

Your Bosch dryer has detected that it is getting dangerously hot inside, and has shut itself down to prevent damage or a fire hazard. This is usually caused by blocked airflow from a clogged lint filter, a dirty heat exchanger, or a blocked exhaust vent. Clean those areas first before restarting the dryer.

Diagnostic procedure

The full E:02 procedure

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1
First diagnostic step
Clean lint filter, airways or heat exchanger.
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Most common causes of E:02

Ranked by how often they cause this code
  1. 1Clogged lint filter
  2. 2Blocked or dirty heat exchanger (condenser models)
  3. 3Restricted or blocked exhaust duct (vented models)
  4. 4Failed high-limit thermostat
  5. 5Defective thermal cutoff fuse

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Questions people ask about E:02

What does E:02 mean on a Bosch dryer?
E:02 indicates a stage 2 overheating fault in the main heating circuit. The dryer's temperature monitoring system has detected heat levels beyond safe limits and has shut down to protect the appliance and your home. This is a more severe thermal condition than a stage 1 event and requires attention before the dryer should be run again.
Is it safe to keep using my dryer with an E:02 error?
No, you should not continue operating the dryer while E:02 is active. This code signals that the heating circuit has reached a dangerous temperature level, which poses a risk of damage to internal components and a potential fire hazard. Resolve the cause of the overheating before running another cycle.
How much does it cost to repair a Bosch dryer with an E:02 error?
If the fix involves only cleaning the lint filter, heat exchanger, or exhaust duct, there is no parts cost and the repair is a straightforward DIY task. If a component such as a thermostat or thermal cutoff fuse has failed, parts typically range from $10 to $60 depending on the specific component, with professional labor adding $80 to $200 or more depending on your location and service provider.
How do I fix the E:02 error on my Bosch dryer?
Start by cleaning the lint filter thoroughly and inspecting the exhaust duct or heat exchanger depending on your model type. On condenser models, remove and rinse the heat exchanger under water to remove lint buildup. On vented models, check the entire exhaust duct run for kinks or blockages. If cleaning airflow components does not clear the fault, a thermostat or thermal cutoff component in the heating circuit may need professional testing and replacement.
Will resetting my Bosch dryer clear the E:02 error?
A reset may temporarily clear the displayed error, but it will not resolve the underlying overheating condition. If the root cause, such as a blocked lint filter, clogged heat exchanger, or restricted duct, is not corrected first, the dryer will overheat again and the fault will return. Always address the cause before attempting to restart the dryer.

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