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LG Refrigerator Error Codes

8 error codes with causes and step-by-step fixes

Code	Meaning	Severity	DIY	Est. Cost
Er FF	Freezer fan error — fan motor not operating	⚠ High Severity	moderate	$25–$65
Er dH	Defrost heater error — defrost cycle not completing	⚠ Medium Severity	moderate	$10–$80
Er CF	Condenser fan motor error	⚠ High Severity	moderate	$25–$60
Er FS	Freezer temperature sensor error	⚠ Medium Severity	moderate	$15–$40
Er IS	Ice maker sensor failure	⚠ Medium Severity	moderate	$15–$40
Er IF	Ice maker fan error	⚠ Medium Severity	moderate	$30–$70
Er CO	Communication error — main board to sub-board	⚠ Medium Severity	hard	$60–$150
dS	Defrost sensor open circuit	⚠ Medium Severity	moderate	$15–$40

⚠️ Serious Errors — Act Quickly