How to Fix Bosch Dryer Error E43

Error Code: E43 Difficulty: Hard

Problem: Points to a problem with the dryer’s air flap or vent system, affecting air flow.

How to Fix E43 Error (Step-by-Step)

1. Disconnect Power: Unplug the dryer from the wall outlet completely to ensure your safety. Never work on an appliance that is connected to a power source.
2. Access Internal Components: You will likely need to remove the top and rear panels of the dryer. Use a screwdriver to remove the screws holding these panels in place. Keep the screws in a safe place for reassembly.
3. Locate the Air Flap Assembly: The air flap assembly is part of the venting system, often located near the exhaust outlet at the back of the dryer. Identify the small motor attached to the flap mechanism.
4. Remove the Old Motor: Carefully disconnect the wire harness attached to the air flap motor. Then, remove the screws that mount the motor to the assembly. The motor should now be free to be removed.
5. Install the New Motor: Position the new air flap motor exactly where the old one was. Secure it using the mounting screws you previously removed. Reconnect the wire harness to the new motor, ensuring it clicks into place securely.
6. Reassemble the Dryer: Carefully replace the rear and top panels, securing them with all the screws. Be careful not to pinch any wires during reassembly.
7. Test the Repair: Plug the dryer back into the power outlet. Run a timed dry cycle to confirm that the dryer operates quietly and that no error codes appear. Listen for the flap actuating at the start or end of the cycle.
8. Turn the appliance off, wait about 2 minutes, then turn it back on.

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

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