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Appliance Fix Guide

Bosch Dryer error code

Bosch Dryer Error E12

Severe overheating, typically due to a blocked lint filter or exhaust vent.

Severe overheating, typically due to a blocked lint filter or exhaust vent.

Updated Aug 18, 2026
✅ WORTH FIXINGParts under $100
Bosch dryer repair guide for error E12
Error codeE12Dryer

Try these first

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

  1. 1
    Check 1

    Thoroughly clean the lint screen.

  2. 2
    Check 2

    Ensure the external dryer vent is not obstructed.

A quick explanation

What does E12 mean?

Severe overheating, typically due to a blocked lint filter or exhaust vent.

The answer you came for

How to fix Bosch dryer error E12

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

  1. 1

    Step 1

    1. Disconnect the dryer from its power source by unplugging it.

  2. 2

    Step 2

    2. Access the back of the dryer and locate the thermal fuse on the heating element or blower housing.

  3. 3

    Step 3

    3. Carefully detach the wires connected to the fuse.

  4. 4

    Step 4

    4. Unscrew the thermal fuse from its mounting and remove it.

  5. 5

    Step 5

    5. Install the new thermal fuse and secure it with the screw.

  6. 6

    Step 6

    6. Reattach the wires to the terminals of the new fuse.

  7. 7

    Step 7

    7. It is critical to clean the entire venting system, from the lint screen to the outside exhaust vent, to address the cause of the severe overheating.

Read the additional checks from the current guide

How to Fix E12 Error (Step-by-Step) Disconnect the dryer from its power source by unplugging it.Access the back of the dryer and locate the thermal fuse on the heating element or blower housing.Carefully detach the wires connected to the fuse and confirm the error stays cleared during a full test cycle.Unscrew the thermal fuse from its mounting and remove it.Install the new thermal fuse and secure it with the screw.Reattach the wires to the terminals of the new fuse.It is critical to clean the entire venting system, from the lint screen to the outside exhaust vent, to address the cause of the severe overheating.Turn the appliance off, wait about 2 minutes, then turn it back on.

What to Check Next on This Bosch Dryer Use these checks before ordering parts for Bosch dryer E12. 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.

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?

  • Overheating caused by restricted airflow.
  • Clogged lint screen.
  • Blocked external dryer vent.

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

Recommended part

Possible part if diagnosis confirms failure

Part listed in the current guide

OEM candidate: Thermal Fuse

Price noted in the current guide: $10-$30

Why this part is shown: It is associated with Bosch Dryer error E12 in the current guide. The error code alone does not prove this part has failed.

Compatibility varies by model. Confirm that the Amazon listing includes your complete dryer model number before ordering.

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Replacement options

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

Why shop your replacement on Amazon?

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  • Convenient delivery options

    Select large appliances may offer scheduled or Room of Choice delivery.

  • Haul-away options

    Haul-away may be available for select appliances and delivery areas.

  • Installation help

    Installation or assembly may be available on select items.

Delivery and service options, fees, and availability vary by item, seller, and delivery ZIP code. Confirm available services at Amazon checkout.

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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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