LG Air Conditioner Error Code 132

Error code 132 indicates that the compressor suction temperature sensor on the sub2 outdoor unit is reading as either open or shorted. The sensor monitors refrigerant temperature at the compressor inlet, and the control board has detected a circuit fault that makes that reading unreliable. LG's diagnostic path for this fault is covered under the CH46 troubleshooting procedure.

Operating the unit while this fault is active is not recommended. The suction temperature sensor protects the compressor from thermal overload conditions, and without accurate readings the control board cannot properly safeguard the compressor. Continued operation risks compressor damage, which is a significantly more expensive repair.

A power reset may temporarily clear the fault code, but if the underlying sensor or wiring problem still exists the error will return as soon as the unit restarts and the control board re-checks the sensor circuit. Resetting is not a fix and should only be done as part of the diagnostic process after a repair has been made.

A knowledgeable DIYer can inspect the sensor wiring harness and connectors for obvious damage or disconnection, which sometimes resolves the fault. However, testing the thermistor's resistance or diagnosing a control board fault requires a multimeter and familiarity with reading resistance-temperature specifications. Any repair involving the refrigerant circuit must be performed by a licensed HVAC technician.

If only the sensor needs replacement, repair costs typically range from around $100 to $300 including parts and labor. If the wiring harness requires repair or replacement the cost may be similar. A control board replacement, if needed, generally runs between $300 and $700 or more depending on the unit. Getting a diagnostic visit from a certified technician will clarify which component is at fault before committing to parts.