Thermistor error — water temperature sensor failure during cycle
The tE error on the LG LDF5545ST indicates thermistor error — water temperature sensor failure during cycle. This typically occurs due to faulty thermistor with out-of-range resistance values. A qualified technician can usually diagnose this in 5–10 min (diagnosis only), but the steps below will help you understand the issue.
Safety Warning
This repair is recommended for certified technicians only. The diagnostic steps below can help you understand the issue before calling for service.
Common Causes of tE
- 1Faulty thermistor with out-of-range resistance values
- 2Loose or corroded wiring connection at the thermistor
- 3Control board temperature measurement circuit failure
- 4Thermistor submerged in water due to cracked housing
How to Fix tE
- 1
Step 1
Turn off the dishwasher and disconnect it from power
- 2
Step 2
Unplug the dishwasher for 5 minutes to allow the control board to reset fully
- 3
Step 3
Restore power and run a short wash cycle to see if the error recurs
- 4
Step 4
If the error recurs persistently, a technician should access the thermistor and test it with a multimeter
- 5
Step 5
Replace the thermistor if it measures outside the specification range for the water temperature
Tools Needed
When to Call a Technician
Error appears on multiple consecutive cycles — the thermistor or control board temperature circuit needs replacement
Frequently Asked Questions
Common questions about LG tE error
The tE error on the LG LDF5545ST indicates the thermistor, which measures water temperature, is malfunctioning. The control board uses this reading to manage wash and dry cycles. A faulty thermistor means the dishwasher cannot accurately control water temperature, affecting wash quality and potentially triggering additional errors.
A power reset by unplugging the dishwasher for 5 minutes occasionally clears a temporary tE error caused by a voltage spike. However, if the error returns on the next cycle, the thermistor itself is faulty and must be replaced. A reset alone will not fix a failed sensor component.
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