Samsung Refrigerator Error Code LL

The LL code indicates a left room sensor error, meaning the thermistor that monitors the temperature in the left compartment is reading either 0 ohms (shorted) or infinite ohms (open circuit). The code is displayed on the L/Room 7-segment display on the unit. The refrigerator cannot accurately measure or control the temperature in that section until the fault is corrected.

With an LL error active, the control board cannot reliably read the temperature in the left compartment, which means cooling in that section may be inconsistent or absent. Food stored in the affected area could be at risk if temperatures rise into unsafe ranges. It is advisable to address the fault promptly and avoid storing perishable items in that compartment until the sensor is repaired.

A reset may temporarily clear the LL code from the display, but the error will return if the underlying fault in the sensor, connector, or wiring harness has not been corrected. The control board will detect the same invalid resistance reading on the next monitoring cycle and redisplay the code. A permanent fix requires identifying and resolving the root cause before the code will stay cleared.

A homeowner or DIYer comfortable with basic tools can start by locating the left room sensor connector and pressing it firmly into place, since a loose connection is the most common cause. If that does not clear the code, measuring the resistance across the sensor terminals with a multimeter will confirm whether the sensor or wiring has failed. Replacing a thermistor is a straightforward repair, though tracing a damaged wiring harness may require more experience.

If the fix is simply reseating a loose connector, there is no parts cost involved. A replacement left room thermistor typically runs in the range of $10 to $40 for the part itself. If professional labor is required, total repair costs including diagnostics and installation generally range from $100 to $250 depending on the technician and your location.