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Error code reference
GE Washer Error Code 4B
Motor drive internal problems.
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What the 4B error code actually means
Your GE washer is showing an error because the part that controls the motor is detecting a problem it cannot work around on its own. This could be caused by a power supply issue at the outlet or a failure inside the motor control board. The washer has stopped running to prevent further damage.
Diagnostic procedure
The full 4B procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
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1
First diagnostic step
Measure AC outlet voltage, ensure correct range (102V to 132V AC).
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of 4B
Ranked by how often they cause this code
- 1Out-of-range supply voltage
- 2Failed motor drive board
- 3Motor winding short or open circuit
- 4Wiring harness fault between drive and motor
- 5Drive board overheating
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Questions people ask about 4B
What does 4B mean on a GE washer?
The 4B code on a GE washer indicates that the motor drive board has detected an internal problem it cannot self-correct. The motor drive controls the speed and operation of the wash motor, and this fault causes the washer to stop running. The issue can stem from an out-of-range supply voltage, a failed drive board, or a fault in the motor or its wiring.
How do I fix a 4B error on a GE washer?
Start by measuring the AC outlet voltage with a multimeter to confirm it falls between 102V and 132V AC. If voltage is within range, inspect the wiring harness between the motor drive board and the motor for damage or loose connectors. If wiring and voltage check out, the motor drive board itself likely needs to be replaced. Testing the motor windings for resistance can help confirm whether the motor is contributing to the fault before purchasing parts.
How much does it cost to repair a GE washer with a 4B error code?
Repair costs vary depending on the root cause. If the problem is simply an unstable power circuit, there may be no parts cost beyond a dedicated outlet or circuit repair. A replacement motor drive board typically ranges from around $80 to $250 or more for the part alone, with professional labor adding $100 to $200 depending on your area. If the motor itself has failed, total repair costs can be higher, and it may be worth comparing repair cost against the age of the appliance.
Will resetting my GE washer clear the 4B error code?
A power reset may temporarily clear the 4B code if the fault was caused by a momentary voltage fluctuation or a one-time thermal event. However, if the underlying problem is a failed drive board, a defective motor, or a persistent wiring fault, the code will return once the washer attempts to run again. Always measure outlet voltage and inspect connections before assuming a reset has resolved the issue.
Is it safe to keep using my GE washer with a 4B error code?
No, you should not continue running the washer while the 4B code is active. The washer has stopped operation specifically to prevent damage to the motor, drive board, or other internal components. Attempting to force the machine through cycles with an active drive fault can cause additional failures and increase repair costs.
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