LG Heat Pump Error Code E293

E293 indicates a high pressure sensor breakaway fault on an LG heat pump. This means the system has detected that the high pressure sensor has lost its connection or is no longer sending a valid signal to the control board. The unit will typically stop operating until the fault is resolved. The issue is related to a physical disconnection or failure of the sensor rather than an actual high-pressure event in the refrigerant circuit.

You should not attempt to bypass or ignore the E293 fault. The high pressure sensor is a safety-critical component, and operating the heat pump without a functioning sensor means the system cannot protect itself from dangerous high-side pressure conditions. Running the unit in this state risks compressor and component damage.

Repair costs vary depending on the cause. If the fix is simply reseating a disconnected wiring connector, costs may be limited to a diagnostic service call, typically in the range of $75 to $150. If the high pressure sensor itself requires replacement, parts and labor combined can range from $150 to $400 or more depending on your region and technician rates. Control board replacement, if needed, would be at the higher end of repair costs.

A homeowner can safely inspect the outdoor unit for any obviously disconnected wiring connector at the high pressure sensor, as this does not require working with refrigerant. However, if the wiring appears intact and the sensor itself needs testing or replacement, a licensed HVAC technician should handle the work, particularly because the sensor is located in the refrigerant circuit.

A power reset may temporarily clear the E293 code, but the fault will return if the underlying sensor disconnection or failure has not been corrected. The error is tied to a physical or electrical condition that must be repaired before the system will operate reliably. Repeated resets without addressing the root cause can mask a condition that may cause further damage.