A plain-language snapshot of rt Lo/Hi for Kenmore Refrigerator — confirm the model series before you act.
Written by
Daniel Reeves Appliance Repair Content SpecialistPublished October 20, 2026
Content statusVerified
Error codert Lo/Hi
ApplianceRefrigerator
Quick answer
rt Lo and rt Hi flag a failed ambient temperature sensor on Kenmore bottom-freezer Trio refrigerators with numbers starting 111.
Model compatibility
Kenmore reuses codes across series and model years, so rt Lo/Hi may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What thiscode means
The room-temperature sensor reports a failure, low or high.
What it is
The ambient temperature sensor on Kenmore bottom-freezer Trio refrigerators (numbers starting 111) has failed when rt Lo or rt Hi is shown.
First steps
Disconnect the refrigerator from power.
Inspect wiring that links the ambient sensor and the control board.
Repair wires that are broken.
Meter step
The manual then wants a resistance reading of the sensor circuit, replacing the sensor if it falls outside 1,000 to 40,000 ohms. That belongs to a technician, and the code resets after repair.
Other sensor messages
Compare with r1 Lo/Hi for the refrigerator compartment sensor and r3 for the defrost heater, which are both listed on the same series.
Refrigerator repair in the areas we serve
We work on Kenmore refrigerators in the Miami, New York, Houston, Los Angeles and San Diego metro areas. For a visit, call (844) 747-3641 with the rt code and model number, or begin at refrigerator repair.
Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Get started
Seeing this code onyour Kenmore appliance?
Book a specialist Kenmore service visit for a clear estimate and approval before any repair. Experienced technicians, clear diagnostics, and workmanship coverage on completed repairs.
