Category: Dishwasher

Error Code: E30 Difficulty: Hard

Problem: Voltage is too high.

How to Fix E30 Error (Step-by-Step)

1. Turn off the circuit breaker for the dishwasher to completely cut off the power.
2. Slide the dishwasher out from its installation spot to get to the control board, usually located in the door panel or at the base.
3. Take a clear picture of the wire connections before you start, for easy reference.
4. Carefully unplug all the wires connected to the control board.
5. Remove the screws that are holding the control board in place and take out the old board.
6. Put the new control board in the same spot and secure it with the screws.
7. Reconnect all the wires by looking at the picture you took, put the dishwasher back, and turn the power on.
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: E28 Difficulty: Hard

Problem: AquaSensor (turbidity sensor) fault.

How to Fix E28 Error (Step-by-Step)

1. Disconnect the dishwasher from power and water supplies for safety.
2. Carefully pull the dishwasher out from under the counter to access its components.
3. Locate the AquaSensor, which is usually found in the sump area at the bottom of the dishwasher tub.
4. Disconnect the wiring harness attached to the old sensor and confirm the error stays cleared during a full test cycle.
5. Remove the old sensor by twisting it counter-clockwise and pulling it out.
6. Install the new AquaSensor by pushing it in and twisting it clockwise to lock it into place.
7. Reconnect the wiring harness, slide the dishwasher back into place, and restore power and water.
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: E09 Difficulty: Hard

Problem: Internal heater fault within the heat pump.

How to Fix E09 Error (Step-by-Step)

1. Turn off the power to the dishwasher at the circuit breaker.
2. Shut off the water supply to the dishwasher and confirm the error stays cleared during a full test cycle.
3. Carefully slide the dishwasher out from its installation space and confirm the error stays cleared during a full test cycle.
4. Lay the dishwasher on its back to access the heat pump at the bottom.
5. Disconnect the electrical connectors and hoses attached to the heat pump assembly.
6. Remove the screws or clips holding the heat pump in place and remove the old unit.
7. Install the new heat pump assembly, reconnect all hoses and electrical connectors, and secure it in place before reassembling the dishwasher.
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: E04 Difficulty: Hard

Problem: Faulty electronics in the self-test, often related to the heater.

How to Fix E04 Error (Step-by-Step)

1. Disconnect the dishwasher from its power source and confirm the error stays cleared during a full test cycle.
2. The flow sensor is located in the water inlet assembly. You will need to pull the dishwasher out from under the counter to access this on the side.
3. Disconnect the hoses and wire harness from the flow sensor assembly and replace it with the new part.
4. The heating element is located at the bottom of the dishwasher tub. You will need to access the bottom of the dishwasher.
5. Disconnect the wires from the heating element terminals. Use pliers to remove the nuts holding the element in place.
6. Gently pry out the old heating element and install the new one, ensuring the rubber seals are seated correctly.
7. Reconnect all wires and hoses, slide the dishwasher back into place, restore power, and test.
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: Hard

Problem: Wash arm diverter circuit fault on the main control board.

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

1. Turn off the power to the dishwasher at the circuit breaker.
2. The float switch is located in the bottom of the dishwasher tub. Remove the lower dish rack to access the float switch cover.
3. Remove the cover and lift out the float mechanism. The switch is underneath. Disconnect the wires from the switch.
4. Squeeze the locking tabs on the switch to release it and push it out from the bottom of the tub.
5. Install the new float switch, reconnect the wires, and reassemble the float mechanism. If the problem continues, replace the control board.
6. To replace the control board, remove the outer door panel to access it. Carefully disconnect all wire harnesses.
7. Install the new board, reconnect the wires, reassemble the door, and then test the dishwasher.
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.

Get the Dishwasher Error Code Guide: https://appliancewhisperer.gumroad.com/l/fdcge

Error Code: E02 Difficulty: Hard

Problem: Main control board relay fault.

How to Fix E02 Error (Step-by-Step)

1. Turn off the power to the dishwasher at the circuit breaker.
2. Access the bottom of the dishwasher by removing the lower access panel.
3. The temperature sensor (thermistor) is located on the sump assembly. Disconnect the wires from the sensor.
4. Rotate the sensor to release it and pull it out. Install the new sensor and reconnect the wires.
5. If replacing the control board, remove the outer door panel by taking out the screws around the inner door.
6. Disconnect the wire harnesses from the control board, remove the board, and install the new one, ensuring all connections are secure.
7. Reassemble the dishwasher, restore power, and check if the error is cleared.
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.

Get the Dishwasher Error Code Guide: https://appliancewhisperer.gumroad.com/l/fdcge

Error Code: SALT SYMBOL (S-SHAPED ARROWS) Difficulty: Easy

Problem: The dishwasher salt reservoir needs to be refilled.

How to Fix SALT SYMBOL (S-SHAPED ARROWS) Error (Step-by-Step)

1. Pull out the bottom rack completely to access the floor of the dishwasher.
2. Locate the large, round cap for the salt reservoir, usually off to one side.
3. Unscrew the cap by turning it counter-clockwise and set it aside. It is normal to see water inside the reservoir.
4. Insert the funnel that came with your dishwasher into the opening.
5. Pour only dishwasher-specific salt into the funnel until the reservoir is completely full.
6. Remove the funnel and wipe away any loose salt granules from the threads of the opening.
7. Screw the cap back on tightly and run a short rinse cycle to distribute the salt and clear the sensor.
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.

Error Code: WATER TAP SYMBOL Difficulty: Easy

Problem: Problem with the water supply.

How to Fix WATER TAP SYMBOL Error (Step-by-Step)

1. Begin by checking the water supply valve connected to the dishwasher, typically located under your kitchen sink. Ensure the handle is turned fully counter-clockwise to the ‘on’ position.
2. Pull the dishwasher out slightly from the cabinet to inspect the water inlet hose for any kinks or sharp bends that could restrict water flow.
3. Gently straighten any part of the hose that is pinched or bent.
4. Turn off the water supply valve. Place a small bucket or towel under the connection and unscrew the hose from the valve.
5. Look inside the end of the hose for a small filter screen. Check if it is clogged with sediment or debris.
6. Remove the screen with needle-nose pliers if possible and rinse it thoroughly under running water until clean. Re-insert the filter.
7. Securely reattach the hose to the water supply valve, turn the water back on, and start a new cycle to clear the error.
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.

Error Code: RED LIGHT ON FLOOR (INFOLIGHT) Difficulty: Easy

Problem: The dishwasher is currently operating.

How to Fix RED LIGHT ON FLOOR (INFOLIGHT) Error (Step-by-Step)

1. Identify the red light shining on the floor beneath the dishwasher.
2. Recognize that this ‘InfoLight’ is a standard feature indicating a wash cycle is in progress.
3. Avoid opening the dishwasher door, as this will interrupt the cleaning and drying process.
4. Allow the dishwasher to run undisturbed until the cycle is fully completed.
5. The red light will automatically extinguish once the cycle has finished.
6. You can now safely open the dishwasher and unload your clean dishes.
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.

Error Code: PRE-RINSE SYMBOL (SPRAY OF WATER) Difficulty: Easy

Problem: The pre-rinse cycle is active.

How to Fix PRE-RINSE SYMBOL (SPRAY OF WATER) Error (Step-by-Step)

1. This symbol shows that the pre-rinse cycle is currently running.
2. This is part of the normal operation to rinse dishes before the main wash cycle begins.
3. No action is needed as this is not an error message.
4. The dishwasher will automatically move to the main wash cycle after the pre-rinse is finished.
5. You do not need any parts or to perform any repairs.
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.