Diagnose & Fix Any
Appliance Error Code
Free step-by-step diagnostic guides, root cause analysis, and OEM replacement part recommendations for major appliance brands.
Whirlpool Washer F5E2 Error Code - Door Latch / Lid Lock Fault Fix
Whirlpool washer code F5E2 indicates the main control board detects the door switch or lid lock assembly is not locking correctly.
Whirlpool Washer F1E1 Error Code - Main Control Board Primary Failure
Whirlpool washer code F1E1 signals a critical primary hardware failure on the main electronic control unit (CCU).
Whirlpool Washer F0E5 Error Code - Off-Balance Load Detected
F0E5 code indicates an off-balance wash load prevented the unit from reaching full spin speed.
Whirlpool Washer F8E1 Error Code - Long Fill / No Water Inlet Fault
F8E1 (LF) triggers when the washer fails to fill with water within the expected time limit.
Whirlpool Dryer E1 F3 Error Code - Thermistor Temperature Sensor Open Fault
E1 F3 error indicates an open electrical circuit in the dryer thermistor temperature sensor.
Samsung Washer 4C / 4E Error Code - Water Supply Line Inflow Fault
Samsung washer 4C (formerly 4E) indicates water is not entering the tub within the designated time frame.
Samsung Washer 5C / 5E Error Code - Water Drain Failure
Samsung 5C (or 5E) signals the washer failed to pump water out of the drum during drain cycle.
Samsung Washer UB / UE Error Code - Unbalanced Load Protection
UB (Unbalanced) or UE code triggers when load distribution prevents safe high-speed spin.
Samsung Refrigerator 22E Error Code - Evaporator Fan Motor Circuit Failure
Samsung 22E indicates the main board detects no feedback signal from the fresh food evaporator fan motor.
Samsung Refrigerator 33E Error Code - Ice Pipe Heater Line Fault
33E code signifies an open or short circuit in the ice maker water fill tube heater element.
LG Washer OE Error Code - Water Drain Outlet Obstruction / Pump Failure
LG washer OE error indicates the machine failed to evacuate water within 13 minutes.
LG Washer IE Error Code - Water Inlet Timeout Fault
LG IE error triggers when water level fails to reach appropriate threshold within allowed fill time.
LG Washer UE / uE Error Code - Unbalanced Load Balance Correction
UE error indicates an imbalanced load. Lowercase 'uE' means machine is attempting auto-correction; uppercase 'UE' requires manual intervention.
LG Refrigerator Er FF Error Code - Freezer Fan Motor Failure
Er FF code signals a failure in the freezer evaporator fan motor circuit or ice buildup blocking fan operation.
LG Dryer d80 / d90 / d95 Error Code - Exhaust Duct Blockage Alert
d80, d90, or d95 indicates 80%, 90%, or 95% airflow restriction in the home exhaust vent system.
GE Washer E22 Error Code - Water Fill Timeout
GE washer E22 code indicates water fill rate was too slow or failed to reach level sensor target in allotted time.
GE Washer E30 Error Code - Drain Pump Obstruction / Drain Timeout
E30 code indicates GE washer failed to drain water completely within the pre-set drain window.
GE Dishwasher H2O Error Code - Low Water Level Detected
H2O code indicates insufficient water entered the dishwasher sump during the wash fill cycle.
Bosch Dishwasher E15 Error Code - Water Protection / Leak In Base Pan
E15 triggers when water collects in the bottom safety pan, activating the microswitch float sensor.
Bosch Dishwasher E24 Error Code - Drain Flow Restriction Fault
E24 signals that the dishwasher is unable to drain water proper during the initial cycle drain check.
Frigidaire Washer E11 Error Code - Fill Time Too Long
E11 code triggers when fill time exceeds standard limit during wash cycle.
Frigidaire Washer E20 Error Code - Drain Problem / Pump Fault
E20 or E21 indicates the washer is taking too long to pump water out of the machine.
Maytag Washer F5E2 Error Code - Door Lock Switch Failure
Maytag washer code F5E2 occurs when control board cannot verify the door lock switch position.
Maytag Washer SD / Sud Error Code - Excessive Foam Detection
SD or Sud code triggers when control board senses excessive suds in outer tub during cycle.
KitchenAid Dishwasher HE Error Code - Heating Element Fault
HE error code indicates the control board detects no temperature increase during heat cycle.
Kenmore Washer F02 Error Code - Drain System Long Drain Time
Kenmore F02 code indicates drain pump is taking longer than 8 minutes to empty wash water.
Carrier Furnace Code 33 - Limit Switch Fault / Overheating
Code 33 indicates the high-limit switch or rollout switch has tripped due to excessive heat build-up inside the furnace main heat exchanger.
Carrier Furnace Code 31 - High Pressure Switch Did Not Close
Code 31 signals that the furnace draft inducer motor ran, but the pressure switch failed to sense proper negative draft pressure.
Trane Furnace 3 Flashes Error Code - Draft Pressure Switch Fault
3 red light flashes on a Trane furnace board indicate the pressure switch circuit is open when it should be closed during combustion startup.
Trane Heat Pump 2 Flashes Error Code - System Lockout / Flame Lockout
2 red flashes indicate system lockout due to multiple failed ignition attempts or loss of flame signal.
Lennox Heat Pump E121 Error Code - Low Pressure Switch Open
Lennox communicator code E121 triggers when the outdoor unit low pressure switch detects unsafe refrigerant loss or freezing.
Lennox Air Conditioner E228 Error Code - Outdoor Blower Motor Failure
Code E228 indicates the main control board has lost speed feedback or communication with the ECM outdoor condenser fan motor.
Goodman Furnace E2 Error Code - Low Flame Signal Fault
Goodman E2 code alerts that the microamp flame signal current dropping below minimum required threshold during operation.
Goodman Furnace E4 Error Code - Open Primary High Limit Switch
E4 indicates the main limit switch circuit opened due to excessive heat build-up inside the plenum.
Rheem Furnace Code 11 - Ignition Failure / No Flame Detected
Code 11 triggers on Rheem and Ruud furnaces when main flame is not established within 4 seconds of gas valve opening.
Rheem Heat Pump Code 22 - Main Limit Switch Open
Code 22 indicates thermal limit switch circuit opened to protect heat exchanger or electrical heating elements from thermal damage.
York Furnace Code d3 - Low Pressure Switch Open Fault
Code d3 indicates pressure switch opened during active burner operation, dropping out flame for safety.
York AC Code F2 - High Freeze Protection Active
Code F2 alerts that indoor liquid line or evaporator coil sensor dropped below freezing point (32°F / 0°C).
Bryant Furnace Code 13 - Limit Circuit Lockout
Code 13 indicates primary limit switch opened 3 consecutive times in a single heat call, putting system into temporary auto-lockout.
Bryant Furnace Code 14 - Ignition Lockout Fault
Code 14 signals furnace failed to maintain flame control after 4 consecutive ignition retry attempts.
Daikin Mini Split Code U4 - Transmission Error Between Indoor and Outdoor Units
Code U4 indicates communication loss on terminal 3 wire connecting indoor wall head to outdoor condenser PCB.
Daikin Mini Split Code A6 - Indoor Fan Motor Lock / Overcurrent
Code A6 triggers when indoor fan motor fan speed drops below expected RPM or motor drawing excessive current.
Mitsubishi Mini Split Code P8 - Pipe Temperature Sensor Fault / Abnormal Protection
Code P8 signals abnormal evaporator pipe temperature during heating or cooling mode, indicating protection shutdown.
Mitsubishi Mini Split Code E6 - Communication Error Indoor/Outdoor
Code E6 alerts that communication signal between indoor controller board and outdoor board is broken or noisy.
GE Oven F30 Error Code - Open Oven Temperature Sensor (RTD)
Code F30 indicates the electronic control board senses an open circuit (infinite resistance) in the oven sensor circuit.
GE Oven F90 Error Code - Door Latch Motor Circuit Fault
F90 indicates the electronic control failed to verify the door lock mechanism position during self-clean cycle.
Whirlpool Oven F3 E0 Error Code - Open Oven Sensor
F3 E0 signals that the main control unit detects an open sensor circuit in the oven temperature probe circuit.
Whirlpool Oven F5 E0 Error Code - Door Switch Fault
F5 E0 code occurs when the main control board senses door switch state does not match door lock state.
Frigidaire Oven F10 Error Code - Runaway Temperature Condition
F10 indicates the control board senses oven temperature rising above safe limits or heating uncontrollably.
Frigidaire Oven F30 Error Code - Open Sensor Circuit
F30 triggers when the control board loses connection with the oven temperature sensor harness.
KitchenAid Oven F3 E0 Error Code - Oven Temperature Sensor Open
F3 E0 indicates the control board senses an open temperature sensor circuit in the upper or lower oven cavity.
KitchenAid Oven F2 E1 Error Code - Keypad Switch Cable Disconnected
F2 E1 alerts that the control board is not detecting keypress matrix signals from the touch panel membrane.
Bosch Oven E011 Error Code - Long Key Press Button Stuck
E011 indicates a key on the control console panel has been pressed or stuck closed for longer than 30 seconds.
Bosch Oven E300 Error Code - Configuration Memory Error
E300 triggers when the main control board fails EEPROM checksum verification or loses system coding data.
Samsung Oven C-20 / C-21 Error Code - Temperature Sensor Short / Open
C-20 (or C-21) signals the main control board detects abnormal sensor resistance (short or open circuit).
Samsung Oven C-d1 Error Code - Door Lock Failure
C-d1 triggers when the door lock assembly fails to latch or unlock correctly within timed limits.
LG Oven F9 Error Code - Heating Failure / Preheat Timeout
F9 code indicates the oven failed to heat up above 150°F after 5 minutes of active preheating call.
LG Oven F3 Error Code - Temperature Sensor Open Circuit
F3 error signals that the main control detects an open circuit in the oven thermistor circuit.
Panasonic Microwave H98 Error Code - Inverter Board / Magnetron Failure
H98 indicates high voltage current generation failure on the inverter board or magnetron tube.
Panasonic Microwave H97 Error Code - Inverter Drive Circuit Fault
H97 signals an internal power supply fault within the high-voltage inverter power circuit module.
Sharp Microwave E-01 Error Code - Damper Motor Switch Fault
E-01 alerts that the air exhaust damper door switch failed to open or close during convection or vent operations.
Sharp Microwave E-02 Error Code - Thermistor Sensor Open
E-02 indicates an open circuit condition detected in the thermistor temperature sensor probe.
Samsung Microwave E-11 Error Code - Gas / Humidity Sensor Fault
E-11 signals that the smart auto-cook gas/humidity sensor circuit is open, shorted, or disconnected.
Samsung Microwave E-83 Error Code - Door Switch Sensor Open
E-83 indicates the control unit detects abnormal door switch contacts state during heating attempt.
Whirlpool Microwave F2 Error Code - Touch Keypad Shorted
F2 indicates a button on the glass panel or membrane switch is stuck in a closed state continuously.
Whirlpool Microwave F1 Error Code - Main Board Internal Microprocessor Fault
F1 code triggers when the main electronic control unit detects internal hardware memory corruption.
LG Microwave F-3 Error Code - Keypad Short Circuit
F-3 code displays when the control panel detects continuous touch contact on any button key for over 60 seconds.
LG Microwave F-11 Error Code - Inverter Output / Magnetron Fault
F-11 code indicates power generation failure from inverter board to magnetron tube.
GE Microwave F3 Error Code - Shorted Keypad Touch Panel
F3 indicates the main control board senses a stuck or shorted touch key switch on the membrane.
GE Microwave SENSOR ERROR - Humidity Sensor Open / Short
SENSOR ERROR occurs when the humidity/steam sensor fails to send valid voltage signals during Sensor Cook mode.
Frigidaire Microwave F08 Error Code - Communication Error
F08 alerts that communication between the user interface panel board and main power logic board has failed.
Frigidaire Microwave F10 Error Code - Touch Pad Shorted
F10 triggers when a key input is detected as active continuously for longer than 60 seconds.
Bosch Microwave E305 Error Code - Inverter Drive Fault
E305 signals an issue with the high-voltage inverter circuit or magnetron power supply line.
KitchenAid Microwave F2 E1 Error Code - Keypad Cable Disconnected
F2 E1 indicates the main control unit is not detecting the keypad ribbon cable connection matrix.
KitchenAid Microwave F1 E1 Error Code - Main Control Board Checksum Error
F1 E1 signals that the main control microcomputer board suffered internal EEPROM checksum failure.
Kenmore Oven F11 Error Code - Shorted Key Pad Error
F11 indicates the electronic oven control board senses a shorted button on the touch panel.
Why Do Appliances Display Error Codes?
Modern household washers, dryers, dishwashers, and refrigerators rely on electronic control boards monitored by sensors. When a sensor detects an operational failure—such as a drain timeout, water supply failure, or door lock obstruction—it halts the cycle and displays an alphanumeric code on the digital display panel.
1. Identify the Code
Note the exact code displayed on your appliance screen or blinking light sequence.
2. Run Diagnostic Checks
Follow our step-by-step troubleshooting checklist before buying expensive parts.
3. Source OEM Parts
Order the exact OEM replacement part number associated with your specific error condition.