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Error code reference

LG Dryer Error Code FE

Invalid power frequency; not using regular power source frequency or invalid power frequency sensor circuit.

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What the FE error code actually means

Your LG dryer is detecting a problem with the frequency of the electrical power coming into the machine. This can happen if the dryer is plugged into a non-standard power source like a generator, or it can mean a sensor inside the dryer has failed. The dryer has stopped running to protect itself until the issue is resolved.

Diagnostic procedure

The full FE 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.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check for not using regular power source frequency and check the invalid power frequency sensor circuit.
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 FE

Ranked by how often they cause this code
  1. 1Non-standard power source
  2. 2Faulty power frequency sensor circuit on control board
  3. 3Unstable or fluctuating utility power
  4. 4Loose or damaged power supply wiring

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Questions people ask about FE

What does FE mean on a LG dryer?
The FE code on an LG dryer indicates that the control board has detected an invalid or out-of-range power frequency from the incoming electrical supply. It can also appear when the internal circuit that monitors power frequency has developed a fault. The dryer stops operation when this code appears to protect its electronics and components.
Will resetting my LG dryer clear the FE error code?
A reset by unplugging the dryer for a few minutes may temporarily clear the code, but if the underlying cause is not corrected, the FE error will return. A persistent FE code after a reset points to either a continuing power supply problem or an internal control board fault that must be addressed directly.
How much does it cost to repair an LG dryer FE error code?
If the fix is simply moving the dryer to a standard utility power outlet, there is no parts cost. If the main control board needs to be replaced, parts and labor combined typically range from around $150 to $350 or more depending on the specific model and local labor rates. Getting a diagnostic call from a certified technician before purchasing parts is advisable to confirm the control board is truly at fault.
Can I fix the FE error code myself?
If the dryer is connected to a generator or non-standard power source, switching to a standard utility outlet may resolve the error immediately without any repairs. If the dryer is already on standard grid power, the fault is likely inside the control board, which requires component-level diagnosis or board replacement. Checking all power supply connections for looseness or damage is a reasonable DIY step before calling a technician.
Is it safe to use my LG dryer when it shows the FE code?
You should not attempt to bypass or ignore the FE code and continue operating the dryer. The dryer shuts down on this fault to protect its control electronics from potential damage caused by irregular power. Running it on an unsuitable power source or with a faulty frequency sensing circuit could cause further damage to the appliance.

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