LG DLGX3901* Error Codes
All error codes for LG DLGX3901* dryer with diagnoses and fixes.
Methodology: We combine manufacturer references with recurring service patterns, then review for safe, step-by-step repair guidance.
Sources: Manufacturer fault-code sheets, service manuals, and recurring field-repair patterns.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What this model hub covers
Use this LG DLGX3901* hub to match the displayed code to the right model-specific guide before replacing parts.
Match the symptom first
Compare the code with the exact operating symptom before assuming a failed board, sensor, heater, motor, or pump.
Safe first checks
Start with owner-safe checks from the manual and stop if the appliance is leaking, overheating, tripping breakers, or repeatedly returning the same fault.
Related LG Dryer model guides
If the suffix or panel layout does not match, check a nearby reviewed model guide.
Use this LG DLE0442G (APGEEUS) dryer page to identify the displayed code, compare the symptom to owner-safe checks, and decide when service is the right next step.
Use this LG DLE3090* dryer page to identify the displayed code, compare the symptom to owner-safe checks, and decide when service is the right next step.
Use this LG DLE3095* dryer page to identify the displayed code, compare the symptom to owner-safe checks, and decide when service is the right next step.
Use this LG DLE3400** dryer page to identify the displayed code, compare the symptom to owner-safe checks, and decide when service is the right next step.
Use this LG DLE3400*L dryer page to identify the displayed code, compare the symptom to owner-safe checks, and decide when service is the right next step.
Use this LG DLE3420* dryer page to identify the displayed code, compare the symptom to owner-safe checks, and decide when service is the right next step.
Common LG Dryer codes
Use the generic code page when the symptom matches but the exact model-specific code page is missing.
LG Dryer error code CL: Child lock active.
LG Dryer error code d80: Exhaust duct 80% blocked — clean lint.
LG Dryer error code d90: Exhaust duct 90% blocked — must clean now.
LG Dryer error code d95: Exhaust duct 95% blocked — fire risk.
LG Dryer error code dE: Door open.
LG Dryer error code dE2: Door switch failure.
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