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What this code means
Serial communication error — communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
First step from the service manual
Unplug washer or disconnect power, then check wire harness connections to the MCU, motor, and CCU.
Next steps: diagnose the root cause
1
Verify the error code is active
Power cycle the unit and see if the code returns. If it does, the fault is persistent and requires diagnosis.
2
Get the full diagnostic procedure
Get step-by-step guidance, test values, and wiring diagrams from the OEM service manual.
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Related GE washer error codes
Motor not rotating properly0No faults present; displayed in Service Mode only when there are no faults to…01UI EEPROM02Bulk Dispense Detergent and Fabric Softener03Bulk Dispense Detergent and Fabric Softener04Stuck Button05Pressure Sensor06Lid Lock08Lid Lock0ANo Fill0BDrain Pump0DIMC (Inverter Machine Control) Communication Timeout0ELid Lock0FHeater Water Level1Lock Monitor1 blinkInverter/motor excessive stop time detected (more than 25 seconds to stop); LED…1 FLASHLong stop time10Mode Shift Feedback Monitor10-FlashMotor light flashes 10 times indicating lost serial communication between the…11Adaptive Drain/Slow Drain12Dry Load Sense Timeout13Redundant Lid Unlocked14Lid Lock Failure15Lid Lock Failure16Adaptive Drain/Slow Drain17Dry Load Sense Timeout18Washer: Drain pump clearing algorithm failed19User Interface (UI) State Timeout1APressure Sensor Dropout1A/1BThermistor Error1BOut of Balance (OOB) Ended Final Spin1CInverter Spin Redundancy1DLid Lock1EWater level sensor fails to send signal for longer than 5 seconds.1FSoftener Bulk Dispenser Sensor2Lid Monitor2 blinksBroken coupling or slipping belt detected; LED blinks twice at 1/4 second…2 FLASHSlipping belt or hub nut/basket loose2 flashesBroken Coupling/Slipping Belt20Critical Flood Level by Gallons203Compressor Motor Inverter Fault206Compressor Motor Inverter Fault209Compressor Motor Inverter Fault21Max Fill215Compressor Motor Inverter Fault216Compressor Motor Inverter Fault217Compressor Motor Inverter Fault22Out of Balance (OOB) during Dry Load Sense220Compressor Motor Inverter Fault229Compressor Motor Inverter Fault23Washer: Critical lid lock failure233Compressor Motor Inverter Fault24Lid Logic Failure241Compressor Motor Inverter Fault25Pressure Sensor Dropout / Pressure Sensor Continuous Gallons Monitor26Lid Lock Failure27UI State Timeout28Mode Shift Feedback Monitor29Mode Shift Feedback Monitor3Locked Rotor Monitor3 blinksInverter ROM checksum error detected; LED blinks 3 times at 1/4 second on/off…3 FLASHCorrupted software3 flashesInverter ROM30Pressure Sensor Dropout303Compressor Motor Inverter Fault306Compressor Motor Inverter Fault31Out of Balance (OOB) Fallback in Final Spin311Compressor Motor Inverter Fault317Compressor Motor Inverter Fault318Compressor Motor Inverter Fault319Compressor Motor Inverter Fault32Out of Balance (OOB) Fallback In Final Spin322Compressor Motor Inverter Fault33Inverter Fault331Compressor Motor Inverter Fault335Compressor Motor Inverter Fault34Bulk Tank Sensor Failure340Compressor Motor Inverter Fault343Compressor Motor Inverter Fault35Low Supply Voltage Detect350UI / Main Control Board Communication Fault351Drain Pump Clearing Algorithm Failed352Compressor Discharge Overtemp353Critical Compressor Discharge Overtemp354Compressor Discharge Thermistor Fault (NTC 1)355Evaporator Thermistor Fault (NTC 2)356Compressor Suction Thermistor Fault (NTC 3)357Air Outlet Temperature Sensor Fault (NTC 4)358Air Inlet Thermistor Fault (NTC 5)359Multiple Thermistor Faults36High Supply Voltage Detect360Humidity Sensor (RH) Fault361Refrigerant Leak362Humidity Sensor (RH) Fault363Air Outlet Temperature Sensor Fault (NTC 4)364Air Outlet Temperature Sensor Fault (NTC 4)365Humidity Sensor (RH) Fault37Redundant Lid Unlocked38Vent Damper Fault39Vent Damper Fault3EMotor/spin failure detected after 4 failed spin attempts during service test…3E1Motor start up failure.3E2Over current error at the motor.3E3Hall sensor error3E4IPM (Intelligent Power Module) overheating error.4Locked Rotor Monitor4 blinksMode shifter error detected; LED blinks 4 times at 1/4 second on/off rate…4 FLASHMode shifter circuit failed4 flashesMode Shifter40Vent Damper Fault41Drive Motor Inverter Fault42Drive Motor Inverter Fault43Drive Motor Inverter Fault44Drive Motor Inverter Fault45Inverter Fault46Inverter Fault47Inverter Fault48Inverter Fault49Inverter Fault4AMotor drive internal problems.4BMotor drive internal problems.4CMotor drive internal problems.4EWater valve problem4FMotor drive internal problems.5Mode Shifter5 blinksNot implemented.5 FLASHNot used.50Inverter Fault51Drive Motor Inverter Fault52Water Valve Stuck Fault53Belt Loss Detection54Motor drive internal problems.55Main control internal problems.56Main control internal problems.57Door Lock Fault Water Above Door by Pressure58ADC Health Check Fault59Accelerometer Fault5EDrain pump problem6Critical Flood Level by Pressure6 blinksLocked rotor detected. Washer sits idle for 15 seconds and retries; if motor…6 FLASHLocked motor6 flashesLocked Rotor60Door lock assembly problems61Door lock assembly problems62Inverter Power And Door Lock Monitor63Door lock assembly problems64Door lock assembly problems65Pressure Sensor Dropout / Pressure Sensor Continuous Gallons Monitor66Drive Motor Inverter Fault67Drive Motor Inverter Fault68Pressure Sensor Out of Range69Drive Motor Inverter Fault6AThermistor Open6BThermistor Short7Mode Shift Feedback Monitor7 blinksLid switch error detected by lid switch counter (4 agitate/spin pairs with no…7 FLASHLid switch did not open7 flashesLid Error70Inverter Volt/Hertz Start Up71Drive Motor Inverter Fault72Inverter Spin Redundancy73Inverter Fault74Inverter Fault75Lid Lock76Bulk Tank Sensor Failure77Critical Door Lock Failure: Can't Unlock Door, Inverter Power and Door Lock…78Board Communication API Mismatch7EWater Supply error8Pressure Sensor Loss8 blinksMotor over temperature condition detected; LED blinks 8 times at 1/4 second…8 FLASHMotor overheated8 flashesMotor Over Temp80Humidity/Temperature Board Failure81Humidity/Temperature Board Heartbeat Failure82Water level sensor problems.83Drive Motor Inverter Fault84Vent Damper Fault85Voltage Detected by MC is outside acceptable window.86Low Water Pressure87Accelerometer Fault88Accelerometer Fault89Accelerometer Fault9Lid Switch Redundancy9 blinksBrake resistor circuit error detected; LED blinks 9 times at 1/4 second on/off…9 FLASHBrake resistor open9 flashesBrake Error90Accelerometer Fault91User Interface (UI): Main Board Heartbeat Timeout92Inverter Fault93Main Board Component Failure94Water Quality Sensor (Turbidity Sensor) Fault98Humidity Sensor I2C Communication Failure99Wi-Fi Communication Fault9E1Under voltage error.9E2Over voltage error.AMax Fill by PressureAECommunication error between Main PCB and Sub PCB.BPressure Sensor LossBasket doesn't stop fast enoughApplying the brake to the basket has failed to stop within 10 seconds.bE2Button errorBlocked MotorControl does not receive pulses from the motor Hall sensor, indicating the…Brake Resistor failedThe voltage across the brake resistor is unsuitable; brake resistor has failed.Broken Clutch CouplingBasket was detected as slowing down too quickly, indicating a broken clutch…CLid Switch RedundancyC0IMC (Inverter Machine Control) Fault.C9IMC (Inverter Machine Control) Fault.CAIMC (Inverter Machine Control) Fault.CBDC Bus BrownoutCB (high)DC Bus HighCCMotor Temp highCDIMC (Inverter Machine Control) Fault.CEIMC (Inverter Machine Control) Fault.CFIMC (Inverter Machine Control) Fault.CLControl lock is active; display alternates between CL and time remaining.ClutchThe home position signal from the clutch motor has not been detected after…COM ERRORInternal serial communication self-diagnostic test on the main board has failed…Control Board Failure (Lid Lock Circuit)The main control detects that the motor controller is not activating the lid…Control Board Failure (Low Water Agitate)The washer tries to agitate with less than the minimum allowed water level…Control Board Failure (Min Water Level)Washer attempts to agitate with less than the minimum allowed water level…Control Board Failure (Motor Triacs)The triacs that control the motor windings have failed on the main board.DRedundant Flood ConditionD0Basket Strike DetectedD1Motor Not Rotating ProperlyD2No Brake ResistanceD3Coupling ErrorD4IMC Communication FaultD5Lid switch error triggered after 3 continuous wash cycles without a lid switch…D6IMC (Inverter Machine Control) Fault.D7IMC (Inverter Machine Control) Fault.D8IMC (Inverter Machine Control) Fault.D9IMC (Inverter Machine Control) Fault.DAIMC (Inverter Machine Control) Fault.DBIMC (Inverter Machine Control) Fault.DCIMC (Inverter Machine Control) Fault.DDIMC (Inverter Machine Control) Fault.dEDoor open errordE1Door lock errorDE2Door protection errordE3Door unlock errorDFIMC (Inverter Machine Control) Fault.drWater level does not decrease to reset point within 15 minutes from draining…Drain SystemWater remains in the tub after the drain pump has been activated; unit is not…ERedundant Lid UnlockedE0Serial Communication errorE00No error codes stored; no faults detected.E1EEPROM errorE10Motor communication interface problemE11EOL Agitation Test Incomplete, code not cleared at End Of Line factory test.E12EOL Drain Test Incomplete, code not cleared at End Of Line factory test.E13IPM (Integrated Power Module) thermistor errorE14Overflow errorE15Open circuit detected in any of the three motor phases; no speed info present…E16Over tripE17Inverter-related fault; inverter operation above designed limits.E18Inverter heatsink over temperatureE19Motor over temperatureE2Water temperature sensor (thermistor) is open or shorted; the electronic…E20Overload current detectedE21Overload power detectedE22Fill timeoutE23Fill problemE24Inverter internal problemE25Motor drive internal problemE26LIN communication failE27Exceeded maximum powerE28Exceeded maximum slipE3Flood condition detectedE30Drain pump not presentE31Pressure sensor does not communicate with the control board (better models).E32Pump Current Detection Circuit Error in the drive system.E35Pressure sensor indicates excess water (better models).E38Dispenser errorE39Dispenser timeoutE4Slow pump errorE40VSD (Variable Speed Drive / Inverter) Health Error.E41Control board receives signal that door switch is open.E42Drive motor instantaneous currentE43DC fault inverterE44Board communications problem.E45Drive motor overload currentE46Drive motor over temperatureE47Control board receives signal that door is open during spin.E48Control board receives signal that door is closed (when it should not be).E49Drive motor overload powerE4AUnder voltsE4BPower up problemsE4COver voltsE4DVSD Ram Error in the drive system.E4EUnder volts after startE4FEEProm faultE5Fill errorE50Drive/Control interface systemE52Main control wake-up errorE53Buffer errorE54No motor responseE55Motor overheating.E56Electronic control checksum failureE57Communication failureE58Communication failureE59No signal from speed analyzer for 3 seconds.E5AHigh temperature at cooling fins on the speed control board.E5BHigh temperature at cooling fins on the speed control board.E5CHigh temperature at cooling fins on the speed control board.E5DCommunication problem between control board and speed control board.E5ECommunication problem between control board and speed control board.E5FCommunication problem between control board and speed control board.E6No pump errorE60Door lock switch failureE61Door unlock and main control switch failureE62System contact failureE63Unexpected open doorE64Unexpected open door while runningE65Water level sensor failure (foam)E66Water Temperature Sensor Open circuit.E67Incoming microprocessor voltage is incorrect.E7Push button errorE70Stuck keyE71Key faultE8Pressure Switch ErrorE9Dispenser motor problemE95Communication error.EB1Incoming power frequency is out of limits.EB2Incoming line voltage above 130 VAC.EB3Incoming line voltage below 90 VAC.EEEEPROM errorEEPROMEEPROM memory on the control board is bad.EEPROM ErrorControl memory check failure indicating corrupted EEPROM data; requires main…EF1Drain pump is clogged.EF2Too much soap (overdosing).FLid Lock FailureF/02Long drain timeF/05Water temperature sensor (NTC) value is out of range during the water heating…F/06Drive motor tachometer errorF/07Motor Control Unit (MCU) short circuit detected by the main control; if failure…F/09Overflow conditionF/10MCU thermal protector tripF/13Dispenser system errorF/14EEPROM errorF/15Motor Control Unit errorF/21CCU/touchpad-LED assembly communication errorF/22CCU/touchpad-LED assembly communication errorF/dLDoor lock errorF/dUDoor unlock errorF/HNo water detected entering the machine or no pressure switch trip detected…FEOverflow errorFFWater supply is not finished in 1 hour or there is no change in the water level…Fill Time OutNon-critical error displayed to consumer when fill time exceeds the allowed…Filling TimeoutThe control does not receive a change of pressure from the pressure switch…Flash ROMChecksum errors found; data is not being written/controlled correctly in EEPROM.FLOODFlooded condition detected, pump out exceeded 3 minutes.Flood Condition Stage 1Water level exceeded expected level during fill; possible flood detected.HEHeater relay error.HE1Heater problem.IEWater inlet errorINCORRECT FILL WATER LEVELThe fill water level detected is incorrect; the wash cycle stops.Inverter not operating correctlyInverter board temperature has exceeded the minimum temperature limit by more…Keypanel MembraneA keypanel membrane pad was detected as pressed for longer than 30 seconds.LCD Display TouchScreenAn LCD touchscreen input was detected for an extended period (longer than 30…LELocked motor errorLid Lock BrokenCritical failureLid Lock FailureCritical failureLid Lock Not Open/CloseLid cannot be locked or unlocked after multiple retry attempts (5 attempts…Lid SwitchControl runs 3 continuous agitation/spin cycles without receiving the lid…Lid Switch FailureCritical failureLid Switch Stuck ClosedAn attempt has been made to start a cycle after 3 or more consecutive cycles…Lid Switch Stuck OpenThe washer did not detect the lid was closed within 5 minutes of displaying…LoLid openLONG DRAINThe drain time has exceeded 6 minutes, causing the wash cycle to stop.Loose BeltControl detects excessive motor speed from the Hall sensor, indicating a loose…Main / Inverter Control ErrorInverter board failed to report to the main board 3 times in a row…Motor not rotating properlyLow voltage at main plug, or Hall sensor indicates the motor is not turning…NO FILLFill exceeded 40 minute maximum without pressure switch tripping.No Fill ErrorTub takes longer than 20 minutes to fill; displayed at Field Service Mode…No Fill or Slow FillWater is not dispensing into unit properly; fill not detected or too slow.NO PUMPPumping air detected with pressure switch still closed.No Pump ErrorPump detection circuit indicates no water is being pumped while the pump is…No SpeedNo motor speed sensor feedback detected; if motor speed sensor is not operating…OEWater level too highOverflowOverflow water level detected by pressure sensor; indicated by Soil LED light…PEPressure sensor errorPFPower failurePressure SensorPressure sensor signal is outside the acceptable frequency range (approximately…Pressure Sensor ErrorPressure sensor frequency is outside of valid values; cycle will be canceled…Pump TimeoutDrain pump fails to reach minimum water level after 4.25 minutes of pumping…Push Button ErrorAny button is closed for 1 minute or longer; displayed at Field Service Mode…PUSHBUTTONStuck pushbutton detected.Redundancy FeedbackMain control detects that the motor controller is not activating the lid lock…SELoad size sensor will not sense load size.Serial Washer Dryer ConnectorSerial communication between washer and dryer failed; washer has not received…SFSystem failure error.SLOW FILLThe fill task has exceeded 20 minutes, causing the wash cycle to stop.Slow PumpPressure switch and/or pressure sensor does not close or reach proper reading…Slow Pump ErrorPressure switch does not reset (closed/empty tub) within 3 minutes of the…SudExcessive suds detectedtEHeating errorThermistorControl cannot detect the ATC thermistor; ATC is disabled and defaults to…Thermistor ErrorATC thermistor is open or shorted (reading outside 10K-120K ohm range); control…Triac in ShortThe triacs that control the motor windings have failed.UbUnbalanced load detectedUEOut of balance errorUNEXPECTED FILL DURING AGITATION OR SOAKThe pressure switch contact opened during the agitation task indicating…Wash TransistorWasher tries to agitate with less than the minimum allowed water level…
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