How to Fix Maytag Washer Error dET
Detergent cartridge not detected in dispenser
212 repair guides
Choose the appliance, then find the exact code. Every guide leads with what the code means, what to try first, and whether a part or replacement is worth considering.
Maytag
Detergent cartridge not detected in dispenser
Door/lid lock opening error
Washer not draining properly
Main Control Board (CCU) / EEPROM Error
Drain Pump Failure / Slow Drain
Pressure Sensor / Water Level Detect Error
Water Temperature Sensor / Heating System
Heater Circuit / Steam Element Failure
No fault stored (diagnostic mode)
Excessive suds detected (oversuds)
Overload; too much residual water detected
Off-balance condition detected
Water ring; water fill or level detection problem
Basket re-engagement failure; multiple cycles without opening lid
System error (model-specific)
System error (model-specific)
Motor Control Unit (MCU) Heat Sink Overheat
Main Control Board (CCU) EEPROM Error
CCU / MCU Data Exchange Failure
Motor control error or motor drive module fault
Water Inlet Valve Failure / Insufficient Flow
Door Lock Mechanism Failure
Heater Failure / Safety Thermostat Open
Water Temperature Sensor (NTC) Error
Drive Motor Tachometer Error
Door Switch System Failure
Overflow Condition (Check Valves/Pump/Switch)
Serial Communication Error (CCU to MCU)
Door Unlock Failure (Mechanical/Electrical)
Communication loss between CCU and UI
User interface fault (variant)
Dispenser Actuator / Linkage Error
Motor Control Unit (MCU) Internal Failure
Long Drain / Pump Circuit Error
Items detected during Clean Washer cycle (numeric equivalent of rL)
Temperature sensor (thermistor) fault
Water temperature too high during wash
Water temperature too high during rinse; hoses likely reversed
Door/lid not closing properly
Door/lid not unlocking properly
Multiple cycles without opening door/lid
Communication fault (variant)
Communication fault (variant)
Motor or motor control board fault
Basket engaged during wash cycle
Shifter actuator fault
Motor/drive fault (variant)
Low water flow; washer not detecting incoming water
Dispenser system problem
Water hazard; water in tub with lid open too long
Wrong voltage; under/over voltage detected
Factory Default; washer reset to factory settings
Hot and cold inlet hoses installed in reverse
Cycle was paused or canceled
Control Lock activated (alternate display)
Lid not locking
Lid cannot unlock
Lid left open during cycle
Control Lock activated
Off-balance load detected
Overload detected; load too large
Power failure interrupted wash cycle
Items detected during Clean Washer cycle
Maytag
Not Heating
Drive Motor Relay Failure on Control Board
Over-suds detection—excess detergent causing foam overflow into drain system
Control / Communication Error
Ambient temperature too low for proper thermistor operation—below 40°F/4°C
Temperature control error—overheating detected by multiple sensors
Airflow restriction detected by control system—equivalent to F4E3
Diagnostic code: Door sense circuit failure on control board or power line interference
Diagnostic code: Motor sensor circuit failure—failed tachometer or Hall effect sensor
Diagnostic code: Moisture sensor circuit failure or communication error
Diagnostic code: Door sense error on control board—intermittent door switch signal
Diagnostic code: Motor circuit failure—open winding or failed start capacitor
Diagnostic code: Coin mechanism circuit error (commercial models) or control board relay failure
Diagnostic code: Low voltage detected at control board power supply
Thermistor Failure (Legacy)
Door not fully closed/latched or door switch not detecting closed position
Main electronic control board failure or motor control circuit error
User interface control board communication failure or stuck keypad
Front/inlet thermistor open circuit or short circuit
Exhaust thermistor failure or restricted airflow triggering thermal protection
Thermal fuse blown due to overheating from restricted airflow or failing heating element
Motor thermal overload tripped due to excessive load or failing motor
High-limit thermostat tripped due to overheating condition
Thermal cut-off fuse blown (non-resettable safety device)
Moisture sensor circuit failure or shorted sensor bars
Control board EEPROM failure or corrupted software
No voltage detected at heater relay—failed relay on control board or open thermistor circuit
Incorrect electronic control board installed for model/serial number range
Control board internal communication failure between microprocessors
User interface board EEPROM failure or communication timeout with main control
Heater Circuit Failure (Legacy)
Exhaust Thermistor Failure (Outlet)
Inlet Thermistor Failure
Drive Motor Failure
Stuck keypad/button on control panel causing continuous input signal
Communication failure between user interface board and main control board
Moisture sensor communication error or intermittent connection
Main control board relay stuck closed causing continuous heater operation
Restricted Exhaust Airflow (Legacy)
Low/No Line Voltage (Legacy)
Exhaust thermistor open circuit or out-of-range resistance
Moisture sensor failure—five consecutive loads dried without moisture detection
Inlet/front thermistor short circuit (resistance below 500 ohms)
Inlet and exhaust thermistor readings differ by more than 30°F indicating sensor mismatch or airflow problem
Control board thermistor circuit failure—ADC converter malfunction or reference voltage fault
Heater relay failure—relay not energizing when commanded by control board
Heater relay stuck closed causing continuous heating without cycling
Restricted airflow—lint screen clogged, vent blocked, or excessive vent length
Low or no line voltage detected at heater circuit—missing L2 leg of 240V supply
Motor / Drive Fault
Door switch circuit failure—switch not detecting closed door position
Door switch stuck closed—detecting door closed when actually open
Door switch circuit intermittent or control board door sense circuit failure
Communication Error (UI → Main Board)
Communication Handshake Failure
No Communication (ECB ↔ UICB)
User Interface Control Assembly Failure
User Interface Control Assembly Failure
User Interface Control Assembly Failure
User Interface Control Assembly Failure
User Interface Control Assembly Failure
High limit thermistor/thermostat triggered—excessive temperature detected
Missing L2 leg of 240V power supply—dryer runs but heater won't operate
Control Lock (Child Lock) Active
Power failure interrupted drying cycle—temporary loss of household electricity
Thermistor short circuit—Neptune series alternate display for tS code
Thermistor short circuit—Neptune series display code equivalent to F3E3
Maytag
Critical control board failure – EEPROM corruption or hardware fault preventing normal operation
Intermittent door switch fault – microswitch making/breaking contact causing False door-open signals
Door ajar condition detected >10 minutes – door switch failure or physical obstruction preventing proper closure
General system error – main control board detected uncorrectable fault in compressor drive circuit or sensor array
Fresh food compartment thermistor fault – sensor reading out of range (>120°F or
Freezer compartment thermistor fault – sensor reading implausible temperature indicating short circuit (
Defrost thermistor fault – sensor monitoring evaporator temperature during defrost cycle reading out of range
Damper control fault – air diffuser/damper motor not responding to control board commands for temperature regulation
Ice maker fault – no harvest cycle detected after 3 consecutive attempts indicating motor/module failure
User interface board communication fault – display board not responding to main control commands
Condenser fan motor fault – fan not running during compressor operation causing high head pressure
Evaporator fan motor fault – fan not running causing no airflow over evaporator coils
Defrost system fault – defrost cycle not terminating properly indicating failed defrost thermostat or heater
Water filter reminder – not an error but maintenance indicator (some models display as fault)
Service mode diagnostic: 9 flashes = defrost system fault (matches F9)
Complete UI failure – no power to display board from main control or severed communication harness
Water system configuration error – control board detecting incompatible water valve or filter system
Programming error – main control board not programmed with correct model-specific code after replacement or memory corruption
Power failure detected – voltage interruption >2 seconds causing control board reset
Power outage detected – freezer temperature exceeded 18°F during power interruption
Freezer thermistor out of range – sensor reading implausible temperature (< -25°F or > 80°F) indicating open/short circuit
Maytag
Stuck Relay on Control Board
Stuck Key on Control Panel
UI Cannot Communicate with Control Board
Shorted thermistor/OWI sensor
OWI failed to calibrate or drain hose check valve issue
Drain Check Valve Failed
Door Latch Won't Close
No Water Detected Entering Tub
Suds or Air in Water Pump
Float Switch Open / Stuck
Flow Meter Disconnected / Damaged
Heating Element Doesn't Work
Heating Element Won't Shut Off
Drain pump electrical problem
Temperature Sensor Fault
Water Circulation Pump Issue
Door not properly latched or door switch circuit open
Dishwasher not heating water to required temperature
Leak Detection / Flood Protection Active
Water fill timeout or inlet valve issue
Temperature sensor circuit failure
Communication problem between water level sensor and main computer
Door not closed within 4 seconds or latch mechanism failure
Motor circuit failure or circulation pump issue
Sensor communication failure or multiple sensor faults
Water drainage problem – slow or incomplete draining
Diverter system malfunction – water distribution issue
Water temperature sensor fault
Electrical control system failure – main control board issue
Drain pump failure or drain system blockage
Heating system failure – heating element or thermostat issue
Shorted thermistor/OWI sensor – optical water indicator fault
Drainage system malfunction or pump communication error
Door switch or latch sensor malfunction
Restricted Drain / Drain Check Valve Fault
Motor rotor blocked or circulation pump failure
Control board communication failure or sensor circuit issue
Wrong User Interface Installed / Communication Error
Water Supply Tap Closed / Communication Error
Door latch assembly failure or water leak detection
Heating circuit failure – heater relay or element issue
Water level sensor fault or pressure switch malfunction
Water level sensor calibration issue or pressure switch fault
Low Water Level / Water Softener Fault
Diverter motor fault – directs water flow between wash arms
Drain pump failure or drain system problem
Diverter motor communication error or mechanical failure
Stuck relay on the electronic control board
Detergent dispenser system malfunction – dispenser solenoid failure
Stuck key button on the control panel
Break in electrical wiring OR thermistor failure
Too much force when closing door – door latch sensor issue
Door not closed within 4 seconds or latch assembly failure
Inlet water issue – electronic control doesn’t detect water entering
Heating element failure or heater circuit fault
Water draining too slow – slow drain issue
Door latch motor failure or door switch circuit issue
Water Supply Issue / Low Water Level
Control Lock (Child Lock) Active
Heating element not energizing or temperaure sensor fault
Water supply valve turned off or water pressure too low