LG Air Conditioner Error Code E237

E237 indicates a condenser outlet temperature sensor error detected by the outdoor unit's self-diagnosis system. The outdoor control board has detected either a short circuit or an open circuit in the sensor that monitors refrigerant temperature leaving the condenser coil. The system shuts down to prevent operating without accurate temperature data from that part of the refrigerant circuit.

No, you should not attempt to bypass or continue running the system while E237 is active. The outdoor unit has shut itself down because it cannot reliably monitor condenser outlet temperature, which is a key safety and performance parameter. Running the system without this data could result in refrigerant circuit damage or compressor failure.

Repair costs vary depending on whether only the sensor needs replacement or if wiring repairs or board replacement are also required. A condenser outlet sensor replacement, including parts and labor, typically falls in the range of $75 to $250. If the outdoor control board is at fault, total repair costs can range from $250 to $600 or more depending on the model and local labor rates.

Diagnosing E237 requires access to the outdoor unit and the ability to test sensor resistance with a multimeter. A knowledgeable DIYer comfortable working with electrical components can inspect the wiring and connector for obvious damage. However, if the sensor itself needs replacement or the outdoor PCB is suspect, a qualified HVAC technician is recommended to ensure the correct part is identified and safely installed.

A power reset may temporarily clear the error display, but E237 will return as soon as the outdoor unit completes its self-diagnosis cycle and detects the same sensor fault again. The underlying sensor or wiring issue must be repaired or the sensor replaced before the error will stay cleared.