LG · Microwave Serious

TE — Thermistor (temperature sensor) error

Generic temperature-sensor fault — the thermistor reading is out of valid range (open, shorted, or wildly drifting). Sensor cooking is disabled.

Keep using it?
Limited use only
DIY difficulty
Moderate
Verified against
lg.com ↗

How to fix it

  1. Unplug 60 seconds, retest.
  2. Let the microwave cool fully before retesting.
  3. Measure thermistor resistance at room temperature; should be roughly 10K ohms.
  4. Inspect and reseat the connector.
  5. Replace thermistor if out of spec; if good, replace main PCB.

Why it happens

Typical signs: TE on display · Auto Cook / Sensor Cook fails · Sometimes appears only on hot restarts

  • Failed thermistor Most common cause.
  • Connector issues Plug loose or corroded.
  • Harness damage Wire chafed against cavity wall.
  • Main board sensor input failed PCB-level fault.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • LG microwave thermistor Common replacement
    Amazon →
  • LG microwave main PCB Common replacement
    Amazon →

More LG microwave codes

CH CH / Child Lock — Control locked DOOR DOOR / Door Error — Door switch / interlock fault F-1 F-1 — Main Control Board Fault F-2 F-2 — Keypad / touch panel shorted F-3 F-3 — Key short / specific button stuck F-4 F-4 — Humidity / steam sensor fault

All LG codes → All microwave codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: lg.com.