e:09
Moderate
Bosch · Dryers
Electronic control system fault
Quick Answer
Error code E:09 on your Bosch Dryers means: Electronic control system fault. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Unplug the dryer and inspect wiring harnesses for damage or loose connections.
2
Test the thermal fuse and thermostat for continuity using a multimeter.
3
If these parts are intact, the issue likely lies with the main control board (MTC).
4
Replacing the MTC board usually resolves the error.
5
Contact an authorized Bosch technician for professional repair.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Main control board (MTC)
Thermal fuse
Thermostat
Wiring harness
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