Bosch Dryer Error E12

⚡ Quick Answer: The Bosch dryer error code E12 indicates an overheating condition, which is commonly caused by restricted airflow. This may occur due to a clogged lin... ✅ DIY Fixable

What Does Error E12 Mean?

The Bosch dryer error code E12 indicates an overheating condition, which is commonly caused by restricted airflow. This may occur due to a clogged lint filter or a blocked vent, leading to insufficient heat during the drying cycle. The dryer may stop and display the code either during or after the heating process, affecting its performance.

Common Symptoms:

  • Error E12 displayed on control panel during or after drying cycle
  • Dryer stops and displays code before/after heating
  • Dryer runs but error appears after some minutes

Possible Causes

  • Restricted airflow due to clogged lint filter (high)
  • Blocked or restricted external vent/exhaust duct (high)
  • Faulty airflow/temperature sensor (thermistor) or thermostat leading to incorrect overheating detection (medium)

How to Fix Error E12

DIY Fix Clean lint filter and exhaust vent

  1. Disconnect dryer from power
  2. Remove and clean lint filter thoroughly
  3. Inspect and clean dryer exhaust vent for obstructions
  4. Check external vent hood and duct path for blockages
  5. Reconnect and test dryer

Technician Only Inspect airflow sensors and thermostatic components

  1. Disconnect power and remove access panels
  2. Inspect thermistor and high limit thermostat for continuity using multimeter
  3. Replace faulty thermistor/thermostat if readings are out of specification
  4. Ensure blower wheel spins freely and ducting inside unit is clear
  5. Reassemble and test dryer

Parts needed: thermistor, high limit thermostat

🛑 When to Call a Pro:
  • If error persists after cleaning vents and filters
  • If you detect damaged internal wiring or components beyond simple sensor/thermostat replacement

Technical Specifications

wattage 3000W
component Heating Element
resistance 10-30 ohms
part_number Bosch 00630259
voltage_rating 240V AC

Common Questions

What does E12 error mean on Bosch dryer?

E12 indicates an overheating condition due to restricted airflow, often linked to a clogged lint filter or blocked vent.

Can I fix Bosch dryer E12 error myself?

Yes, you can clean the lint filter and exhaust vent to resolve E12 error.

How much does it cost to fix E12 error?

$50-$200, depending on whether a simple cleaning or parts replacement is needed.

When should I call a technician for E12?

Call a technician if the error persists after cleaning or if you notice damaged internal components.

Sources & References

Data last verified: 2026-01-16

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