Category: Bosch

How to Fix Bosch Dryer Error E28
Error Code: E28 Difficulty: Hard

Problem: Electronics fault.

How to Fix E28 Error (Step-by-Step)
1. Perform a safety reset by first unplugging the dryer from its power source.
2. Leave the unit unplugged for at least 10 minutes to allow the electronic controls to discharge and reset.
3. Clean the lint filter thoroughly, as this is a common cause of airflow-related errors.
4. Inspect the dryer’s vent hose for any kinks, and check the exterior vent cap to ensure it opens freely.
5. Plug the dryer back in and start a cycle and confirm the error stays cleared during a full test cycle.
6. Turn the appliance off, wait about 2 minutes, then turn it back on.
7. Check for simple blockages (lint screen, drain path, or filter) and clean anything you find.
Verified Compatible Alternatives:
- Control Board
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
April 9, 2026
How to Fix Bosch Dryer Error E36
Error Code: E36 Difficulty: Moderate

Problem: Problem with the water drain; potential blockage in the drain tube, hose, or pump.

How to Fix E36 Error (Step-by-Step)
1. Disconnect the dryer from the power source by unplugging it from the wall outlet.
2. Locate the condensation drain pump, which is usually at the bottom of the dryer. You may need to remove a lower access panel.
3. Have a shallow pan and towels ready to catch any residual water.
4. Disconnect the hoses attached to the pump. Check both the hoses and the pump inlet/outlet for any lint, debris, or other blockages.
5. If a blockage is found, clear it out completely. If the pump itself appears damaged or fails to drain, it will need to be replaced.
6. To replace the pump, remove the mounting screws holding it in place, install the new pump, and reconnect the hoses securely.
7. Reassemble the dryer, plug it back in, and run a test cycle to ensure it is draining properly.
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.
April 9, 2026
How to Fix Bosch Dishwasher Error E22
Error Code: E22 Difficulty: Easy

Problem: Blocked filter.

How to Fix E22 Error (Step-by-Step)
1. Open the dishwasher door and slide the bottom rack completely out of the tub.
2. Locate the filter assembly in the bottom center of the dishwasher floor.
3. The assembly usually consists of two parts: a cylindrical micro-filter and a flat coarse filter. Twist the cylindrical filter counter-clockwise to unlock it.
4. Lift out the cylindrical filter and then remove the flat mesh filter plate that was underneath it.
5. Thoroughly rinse both filter components under warm running water. Use a soft brush to gently remove any food particles or built-up grime.
6. Clean any debris from the sump area where the filter sits.
7. Reinstall the flat filter first, ensuring it sits flush, then place the cylindrical filter back and twist it clockwise until it locks securely in place.
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.
April 9, 2026
How to Fix Bosch Dishwasher Error E20
Error Code: E20 Difficulty: Hard

Problem: Heat pump internal heater error.

How to Fix E20 Error (Step-by-Step)
1. Turn off the power to the dishwasher at the main circuit breaker to ensure safety.
2. Shut off the water supply and disconnect the drain and supply lines from the appliance.
3. Carefully pull the dishwasher out of its cabinet. You may need to lay it on its back on a protective towel to access the bottom components.
4. Locate the main pump (also called a heat pump or circulation pump) and the main control module.
5. Methodically disconnect the wiring harnesses and hoses attached to the pump. Take photos beforehand to remember the connections.
6. Unbolt and remove the old pump. At the same time, locate and replace the control module, carefully transferring each wire connector to the new board.
7. Install the new main pump, ensuring all hose clamps and electrical connections are secure. Set the dishwasher upright, reconnect utilities, and run a test 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.
April 9, 2026
How to Fix Bosch Dryer Error E56
Error Code: E56 Difficulty: Moderate

Problem: Communication error between the control board and other components, or a problem with the moisture sensor.

How to Fix E56 Error (Step-by-Step)
1. Unplug the dryer from the electrical outlet for at least 10 minutes to allow the internal electronics to reset.
2. While unplugged, locate the moisture sensor inside the dryer drum. It typically consists of two metal bars.
3. Clean the surface of the moisture sensor bars with a soft cloth and a small amount of rubbing alcohol to remove any residue from fabric softener sheets or detergents.
4. After cleaning, plug the dryer back in and try running a cycle. If the error persists, the moisture sensor may be faulty.
5. To replace the sensor, you will need to access the inside of the dryer cabinet. Disconnect the wires from the old sensor and remove it.
6. Install the new moisture sensor, ensuring the wiring is securely connected.
7. Reassemble the dryer and test its operation and confirm the error stays cleared during a full test 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.
April 9, 2026
How to Fix Bosch Dishwasher Error E21
Error Code: E21 Difficulty: Hard

Problem: Blocked heat pump.

How to Fix E21 Error (Step-by-Step)
1. Cut all power to the dishwasher by switching off the corresponding circuit breaker.
2. Turn off the hot water supply valve under the sink.
3. Gently slide the dishwasher out from its installed position. It’s best to place it on its back on a soft blanket or cardboard to access the underside.
4. Identify the circulation pump, which is a large motor and housing assembly near the center.
5. Disconnect the electrical wires leading to the pump and detach the inlet and outlet hoses. Have a shallow pan and towels ready for water that will drain out.
6. Remove the screws or release the tabs that mount the pump to the dishwasher’s sump assembly and remove the old pump.
7. Mount the new circulation pump, reattach the hoses and wiring, and carefully return the dishwasher to its upright position before reinstalling and testing.
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.
April 9, 2026
How to Fix Bosch Dishwasher Error E19
Error Code: E19 Difficulty: Hard

Problem: Detergent dispenser solenoid circuit error.

How to Fix E19 Error (Step-by-Step)
1. Disconnect the dishwasher from its power source by turning off the circuit breaker and shut off the water supply valve, usually located under the sink.
2. Carefully slide the dishwasher out from under the counter to access its sides and back.
3. Remove the outer side panels and the base panel at the bottom front to expose the internal components.
4. Locate the heat exchanger assembly on the side of the unit and identify the outlet valve connected to it.
5. Unplug the electrical connector from the valve solenoid and carefully detach the connected hoses, being prepared for some residual water to spill.
6. Remove the old valve, which may be held by clips or screws, and install the new heat exchanger outlet valve in its place.
7. Reconnect the hoses and electrical connector, reassemble the panels, slide the dishwasher back into place, and restore power and water to test the repair.
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.
April 9, 2026
How to Fix Bosch Dryer Error E63
Error Code: E63 Difficulty: Hard

Problem: Heating element failure or issue with the heating system.

How to Fix E63 Error (Step-by-Step)
1. Turn off the circuit breaker that supplies power to the dryer.
2. To access the heating element, you will likely need to remove the rear panel of the dryer.
3. The heating element is a large, metal assembly with coils. Visually inspect the coils for any breaks or signs of damage.
4. Using a multimeter, test the heating element for continuity. A lack of continuity indicates the element is burned out and needs replacement.
5. Disconnect the wires from the old heating element and remove the screws that hold it in place.
6. Install the new heating element, making sure to secure it with the screws and reconnect the wiring correctly.
7. Replace the rear panel, restore power to the dryer, and run a heated cycle to confirm the new element is working.
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.
April 9, 2026
How to Fix Bosch Dishwasher Error E12
Error Code: E12 Difficulty: Easy

Problem: Limescale build-up in the heat pump.

How to Fix E12 Error (Step-by-Step)
1. Run a cleaning cycle with a dishwasher-specific descaling product and confirm the error stays cleared during a full test cycle.
2. Pour the descaler directly into the bottom of the empty dishwasher.
3. Select the hottest and longest wash cycle available on your dishwasher.
4. Allow the cycle to run completely without interruption and confirm the error stays cleared during a full test cycle.
5. For heavy buildup, a second treatment may be necessary and confirm the error stays cleared during a full test cycle.
6. Regularly use a descaler every 1-3 months to prevent future limescale accumulation.
7. Ensure your water softener (if you have one) is functioning correctly and filled with salt.
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.
April 9, 2026
How to Fix Bosch Dishwasher Error E10
Error Code: E10 Difficulty: Easy

Problem: Zeolite (CrystalDry) chamber heater fault.

How to Fix E10 Error (Step-by-Step)
1. Disconnect the dishwasher from the power supply and confirm the error stays cleared during a full test cycle.
2. Open the dishwasher door and locate the Zeolite container, usually at the bottom.
3. Carefully remove the lower rack to get better access and confirm the error stays cleared during a full test cycle.
4. Inspect the heating element within the Zeolite chamber for any visible signs of damage or disconnection.
5. If a wire is loose, reconnect it securely and confirm the error stays cleared during a full test cycle.
6. If the element appears damaged, it will need to be replaced.
7. Reassemble and restore power to see if the error is cleared.
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.
April 9, 2026