Category: Refrigerator

Error Code: F05 Difficulty: Hard

Problem: Ice maker sensor failure.

How to Fix F05 Error (Step-by-Step)

1. Turn off the circuit breaker for the refrigerator to completely disconnect power.
2. Remove the ice bucket from the freezer to gain access to the ice maker assembly.
3. Loosen the mounting screws that hold the ice maker to the freezer wall or ceiling.
4. Carefully pull the ice maker forward and locate the wire harness connection. Press the release tab and disconnect the harness to fully remove the assembly.
5. Locate the sensor on the old ice maker assembly. It may be held by clips or a small screw. Remove it and install the new sensor in its place, ensuring it is securely fastened.
6. Reconnect the wire harness to the new ice maker assembly and position it back onto the mounting screws. Tighten the screws to secure it.
7. Reinstall the ice bucket, restore power at the circuit breaker, and allow several hours for the new ice maker to cycle and begin producing ice.
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.

Browse all Bosch error codes: Bosch Error Codes

Error Code: F04 Difficulty: Easy

Problem: Freezer door open.

How to Fix F04 Error (Step-by-Step)

1. Look for any packages, ice bins, or drawers inside the freezer that might be obstructing the door.
2. Check for any ice or frost buildup along the door frame or gasket that could be preventing a tight seal.
3. Wipe the freezer door gasket with a damp cloth to remove any crumbs or frost.
4. Verify that the freezer door is properly aligned with the body of the refrigerator.
5. Close the freezer door securely, making sure it clicks shut.
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.

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

Browse all Bosch error codes: Bosch Error Codes

Error Code: F03 Difficulty: Easy

Problem: Refrigerator door open.

How to Fix F03 Error (Step-by-Step)

1. Check for any food items, containers, or shelves that are preventing the refrigerator door from closing completely.
2. Inspect the rubber door gasket for any food debris or spills and clean it with warm, soapy water and a cloth.
3. Ensure the refrigerator is level. If it tilts forward, the door may not stay closed. Adjust the front leveling feet as needed.
4. Gently push on the corners of the door when it’s closed to check for a proper seal.
5. Close the door firmly to ensure it latches and the interior light turns off.
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.

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

Browse all Bosch error codes: Bosch Error Codes

Error Code: F02 Difficulty: Hard

Problem: Defrost sensor issue.

How to Fix F02 Error (Step-by-Step)

1. Unplug the refrigerator from the wall outlet to ensure safety.
2. Empty the freezer section completely, removing all food, shelves, and bins.
3. Locate and remove the screws holding the rear interior panel (the evaporator cover) in place.
4. Carefully detach the panel to expose the evaporator coils. The defrost sensor is a small component clipped directly onto these coils.
5. Disconnect the sensor’s wire harness connector and unclip the old sensor from the coil.
6. Clip the new sensor (part 00617203) in the exact same position as the old one and reconnect the wire harness.
7. Reinstall the evaporator cover, followed by all shelves and food, then plug the refrigerator back in.
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.

Browse all Bosch error codes: Bosch Error Codes

Error Code: F01 Difficulty: Hard

Problem: Temperature sensor failure.

How to Fix F01 Error (Step-by-Step)

1. Unplug the refrigerator from the wall outlet to ensure your safety.
2. Empty the refrigerator and freezer compartments, removing all food, shelves, and drawers to get clear access to the interior panels.
3. Locate the temperature sensor. It is typically found in the fresh food compartment, behind a small plastic cover on the back or side wall, near the air vents.
4. Carefully pry off the sensor’s cover with a small flathead screwdriver. Disconnect the sensor by gently unplugging its wire harness connector.
5. Plug the new temperature sensor into the wire harness connector and snap it into place where the old sensor was mounted.
6. Reinstall the plastic cover, all shelves, and drawers and confirm the error stays cleared during a full test cycle.
7. 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.

Browse all Bosch error codes: Bosch Error Codes

Error Code: E21 Difficulty: Hard

Problem: Communication error between the display control module and the ice and water dispenser control module.

How to Fix E21 Error (Step-by-Step)

1. Unplug the refrigerator from the wall outlet to ensure your safety.
2. Attempt a system reset by leaving the refrigerator unplugged for 10-15 minutes to allow the internal electronics to discharge, then plug it back in. If the error persists, proceed to the next step.
3. Access the display control module, which is typically located behind the main user interface on the exterior of the refrigerator door. This may require carefully prying off a plastic cover or removing a few screws.
4. Locate the ice and water dispenser control module, usually found inside the dispenser housing itself. You will likely need to remove the dispenser drip tray and front panel to access it.
5. Carefully inspect the wiring harness that connects the display module to the dispenser module. Look for any pinched, frayed, or disconnected wires. Securely reconnect any loose plugs you find.
6. If the wiring appears intact, one of the control modules has likely failed. It is recommended to replace the dispenser control module first. Disconnect the wire connectors from the old module, remove it from its mounting, and install the new one in its place.
7. 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.

Browse all Bosch error codes: Bosch Error Codes

Error Code: + BUTTON IS LIT Difficulty: Moderate

Problem: The temperature inside the refrigerator is rising.

How to Fix + BUTTON IS LIT Error (Step-by-Step)

1. First, check if the refrigerator door is fully closed and that nothing is blocking it from sealing properly.
2. Carefully inspect the rubber door seal for any cracks, tears, or gaps. Clean the seal with warm, soapy water to remove any debris that might be preventing a tight seal.
3. Feel around the edge of the door for any cold air escaping. If you feel a draft, the seal may need to be replaced.
4. Check for any frost buildup inside the refrigerator or freezer, as this can indicate a sealing issue.
5. Ensure the refrigerator is level. If it tilts forward, the door may not close on its own.
6. If the light remains on after these checks, the issue could be a faulty temperature sensor or control board, which requires professional service.
7. Turn the appliance off, wait about 2 minutes, then turn it back on.

Next Steps and Parts

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

Error Code: E10 Difficulty: Hard

Problem: Main control board module is defective.

How to Fix E10 Error (Step-by-Step)

1. Disconnect the refrigerator from its power source to ensure safety.
2. Locate the main control board housing on the back of the unit and remove its protective cover.
3. Before disconnecting anything, take a clear picture of the board and all its wire connections to use as a guide.
4. Methodically disconnect each wire harness from the old control board. Most have locking tabs that need to be pressed.
5. Remove the screws or release the clips holding the old board in place and carefully lift it out.
6. Install the new main control board, ensuring it is securely mounted. Refer to your photo to reconnect all wire harnesses to their correct ports.
7. Replace the cover panel, restore power to the refrigerator, and allow several minutes for the new board to initialize.
8. Turn the appliance off, wait about 2 minutes, then turn it back on.

Next Steps and Parts

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

Error Code: E08 Difficulty: Hard

Problem: Evaporator fan failure.

How to Fix E08 Error (Step-by-Step)

1. Unplug the refrigerator from the power outlet and empty the freezer compartment completely.
2. Remove all freezer shelves, bins, and the icemaker assembly (if present) to gain access to the back panel.
3. Unscrew and carefully remove the interior rear panel of the freezer. You may need to gently pry it loose as it can be frozen in place.
4. The evaporator fan is now visible. Disconnect the electrical wire harness attached to the fan motor.
5. Remove the screws that mount the fan and motor assembly to the freezer wall.
6. Mount the new evaporator fan assembly, reconnect the wire harness, and ensure the fan blades can spin freely.
7. Reinstall the freezer’s rear panel, shelves, and icemaker, then restore power to the refrigerator.
8. Turn the appliance off, wait about 2 minutes, then turn it back on.

Next Steps and Parts

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

Error Code: E05 Difficulty: Moderate

Problem: Ice maker sensor failure.

How to Fix E05 Error (Step-by-Step)

1. Disconnect the refrigerator from its power supply and confirm the error stays cleared during a full test cycle.
2. Turn off the water supply to the ice maker and confirm the error stays cleared during a full test cycle.
3. Remove the ice bin to gain access to the ice maker assembly.
4. The ice maker sensor is part of the ice maker module. You may need to remove the ice maker to access it.
5. Disconnect the wire harness connected to the ice maker and confirm the error stays cleared during a full test cycle.
6. Locate and replace the faulty sensor within the ice maker assembly.
7. Reinstall the ice maker, reconnect the wiring, turn the water supply back on, and restore power to the refrigerator.
8. Turn the appliance off, wait about 2 minutes, then turn it back on.

Next Steps and Parts

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