How to Fix Bosch Dryer Error F42

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⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.

Error Code: F42 Difficulty: Hard

Problem: Issue with the carbon brushes in the motor.

⚖️ Repair Decision

✅ WORTH FIXING

Parts under $100

How to Fix F42 Error (Step-by-Step)

Disconnect the dryer from the power source and confirm the error stays cleared during a full test cycle.
Remove the necessary panels to gain access to the dryer’s motor.
Locate the carbon brushes on the motor housing and confirm the error stays cleared during a full test cycle.
Disconnect the electrical leads attached to the brushes and confirm the error stays cleared during a full test cycle.
Remove the screws or clips holding the old carbon brushes in place and remove them.
Insert the new carbon brushes and secure them and confirm the error stays cleared during a full test cycle.
Reconnect the electrical leads and reassemble the dryer and confirm the error stays cleared during a full test cycle.
Turn the appliance off, wait about 2 minutes, then turn it back on.

OEM Part #: Carbon Brushes

Estimated Market Price: $10-$77

Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.

Appliance Type

Appliance Age

Estimated repair cost (parts, or parts + labor) Most DIY parts are $50–$250. If you have a quote, use the total.

Is it under warranty?

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