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Error code reference

LG Dishwasher Error Code FC

Fan motor RPM measured less than 100 rpm after retry 3 times.

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What the FC error code actually means

Your LG dishwasher detected that the drying fan motor was not spinning fast enough during the drying cycle, even after trying to restart it three times. This fan helps dry your dishes by moving air inside the tub, and without it working properly the dishwasher stops and displays this code. A technician will need to check the fan motor and its wiring to get the dishwasher running again.

Diagnostic procedure

The full FC 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 dry fan motor connections and measure fan motor coil resistance.
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 FC

Ranked by how often they cause this code
  1. 1Loose or damaged fan motor wiring connections
  2. 2Failed fan motor coil winding
  3. 3Seized fan motor
  4. 4Faulty control board fan motor output
  5. 5Intermittent connector contact

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Questions people ask about FC

What does FC mean on a LG dishwasher?
The FC code means the dishwasher's dry fan motor measured less than 100 RPM during the drying cycle, and the control board was unable to recover after three retry attempts. The fan motor is responsible for circulating air to dry dishes after the wash cycle. This fault causes the dishwasher to stop operating until the underlying issue is resolved.
Is it safe to run my LG dishwasher with an FC error code showing?
No. When the FC code is active, the dishwasher has already halted the cycle because the drying fan is not functioning correctly. Attempting to force the unit to continue operating without resolving the fault can result in poor drying performance and may mask an underlying electrical problem. The dishwasher should be inspected and repaired before regular use resumes.
How much does it cost to repair an FC error on a LG dishwasher?
Repair costs vary depending on the cause. If only a connector needs reseating, the cost may be limited to a service call fee, typically in the range of $75 to $150. Replacing the dry fan motor itself generally brings the total repair cost to somewhere between $150 and $300 including parts and labor. A control board replacement, if needed, can push costs higher, often ranging from $250 to $400 or more.
Can I fix the FC error on my LG dishwasher myself?
Some FC errors are caused by loose wiring connections that a careful DIYer can reseat after disconnecting power to the unit. However, diagnosing a failed motor coil or faulty control board requires a multimeter and comfort working with appliance wiring. If connections look intact and the motor does not spin freely by hand, the repair will likely involve replacing the fan motor, which is better suited for a technician.
Will resetting my LG dishwasher clear the FC error code?
A reset may temporarily clear the displayed code, but the FC fault will return if the underlying fan motor or wiring problem has not been corrected. The control board requires the fan motor to sustain at least 100 RPM, and it will retry and re-trigger the code if the root cause remains. A reset is useful only for confirming whether a transient glitch caused the fault, not as a permanent fix.

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