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Appliance Fix Guide

Bosch Dryer error code

Bosch Dryer Error F12

Electronics problem; the unit may need to be dried.

Electronics problem; the unit may need to be dried.

Updated Aug 18, 2026
informationalno_parts
Bosch dryer repair guide for error F12
Error codeF12Dryer

Try these first

Start here before buying a part or taking the appliance apart.

  1. 1
    Check 1

    Power Cycle: Disconnect the dryer from power for 10 minutes to reset the electronics.

  2. 2
    Check 2

    Check for Blockages: Ensure the condenser and lint filters are clean and free of any obstructions that could restrict airflow and cause the motor to overheat.

  3. 3
    Check 3

    Inspect Motor: Visually inspect the motor for any signs of overheating or damage.

A quick explanation

What does F12 mean?

Electronics problem; the unit may need to be dried.

The answer you came for

How to fix Bosch dryer error F12

Start with the safest checks and work from simple to technical.

  1. 1

    Step 1

    1. Disconnect the dryer from the wall outlet to ensure your safety.

  2. 2

    Step 2

    2. Relocate the dryer to a dry, well-ventilated space. Leave the door ajar for at least 24 to 48 hours. This allows any potential moisture inside the electronic components to fully evaporate.

  3. 3

    Step 3

    3. After the waiting period, plug the dryer back into the power source and try starting a new cycle to see if the error is resolved.

  4. 4

    Step 4

    4. If the error code comes back, the issue is likely a failed hardware component and will require professional diagnosis. Unplug the appliance.

  5. 5

    Step 5

    5. A technician will need to access and test the main control board using a multimeter. A faulty board is a common cause for this error.

  6. 6

    Step 6

    6. If the control board is defective, the technician will need to carefully disconnect all wiring harnesses and remove it to install a new one.

  7. 7

    Step 7

    7. The technician will also inspect the drive motor and its connections, as a fault in the motor can send an error to the control board. If the motor is found to be the cause, it will be replaced.

Read the additional checks from the current guide

How to Fix F12 Error (Step-by-Step) Disconnect the dryer from the wall outlet to ensure your safety.Relocate the dryer to a dry, well-ventilated space. Leave the door ajar for at least 24 to 48 hours. This allows any potential moisture inside the electronic components to fully evaporate.After the waiting period, plug the dryer back into the power source and try starting a new cycle to see if the error is resolved.A service will need to access and test the main control board using a multimeter. A faulty board is a common cause for this error.If the control board is defective, the service will need to carefully disconnect all wiring harnesses and remove it to install a new one.The service will also inspect the drive motor and its connections, as a fault in the motor can send an error to the control board. If the motor is found to be the cause, it will be replaced.Turn the appliance off, wait about 2 minutes, then turn it back on. Parts Availability Note: For this Electrolux/Frigidaire error code, exact OEM part numbers can vary by model revision and serial range. We’ve listed the most likely component(s), but confirm compatibility using your full model number before ordering. If no exact SKU is shown, use this guide for diagnosis first, then verify the matching OEM part on RepairClinic or PartSelect. Still Not Working? If the replacement part didn't fix the issue, you may have a wiring problem or main board failure.

What to Check Next on This Bosch Dryer Use these checks before ordering parts for Bosch dryer F12. They keep the diagnosis tied to the appliance instead of turning the page into a reset-only guide. Unplug the dryer before touching the lint housing, rear vent, lower service area, or any wiring. Clean the lint screen, moisture sensor bars, condenser area if equipped, and the full vent path so airflow problems do not imitate part failures. Run a short timed cycle with a light load and note whether the fault appears immediately, after heating starts, or near the end of the cycle. If the fault returns with clean airflow, inspect the part categories below using the full model number from the dryer tag. Stop repeated test cycles if you smell heat, see moisture near electrical areas, or hear grinding from the drum drive. Recommended Parts to CheckBosch dryer part numbers vary by model. These are model-number-safe part-category searches, not universal fit claims.Dryer lint screenCommon replacement category: lint filterFit note: Exact OEM part number varies by full model number. Confirm compatibility before buying.Why check it: Start with lint restrictions when heating, airflow, or maintenance warnings appear.Search Amazon for Dryer lint screenDryer thermal fuseCommon replacement category: thermal protectionFit note: Exact OEM part number varies by full model number. Confirm compatibility before buying.Why check it: Common safety device to inspect after overheating or no-heat symptoms.Search Amazon for Dryer thermal fuseDryer drum beltCommon replacement category: drive systemFit note: Exact OEM part number varies by full model number. Confirm compatibility before buying.Why check it: Worth checking when the dryer tumbles poorly, stalls, or makes drive noise.Search Amazon for Dryer drum beltDryer moisture sensorCommon replacement category: sensor circuitFit note: Exact OEM part number varies by full model number. Confirm compatibility before buying.Why check it: Useful category to verify when dryness or care/maintenance messages persist.Search Amazon for Dryer moisture sensorBefore ordering: match the part to the complete model number on the appliance tag. Browse all Bosch error codes: Bosch Error Codes

If the code comes back

Do not keep replacing parts based only on the code. Repeat the safe checks above. If the fault remains, stop and arrange qualified service rather than ordering from the code alone.

What may be causing it?

  • Motor control board failure
  • Clogged condenser or lint filters
  • Motor overheating

These are possibilities to investigate, not proof that one part has failed.

Recommended part

Recommended part for this error code

No replacement part recommended for this code

The researched guidance for Bosch Dryer error F12 points to user-action and diagnostic steps above rather than a mapped replacement part. We will not invent a part or send you to an unrelated product.

Replacement options

Ready to replace your dryer?

If repairing this dryer no longer feels worthwhile, compare three replacement paths below.

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Make the money decision

Repair or replace calculator

Use the age and total repair estimate to get a simple comparison. This is guidance, not a guarantee.

Safety first

Disconnect power before opening panels or touching internal parts.

When to stop
  • Stop if you see burned wiring, melted connectors, water near electrical parts, or a gas smell.
  • Do not perform live-voltage testing unless you are trained and equipped for it.
  • Use the exact model manual or service information before replacing electronic controls.

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