Traeger LEr Error Code: Low Temperature Fix for Pellet Grills
Quick Answer
Traeger LEr is the #1 most searched pellet grill error code and the most common issue Traeger owners face. LEr triggers when the internal RTD temperature probe reads 125F or more below the set temperature for a sustained period. The grill enters shutdown mode to prevent a dangerous pile of unburned pellets in the firepot (which could cause an HEr flare-up on the next start).
Traeger LEr is the #1 most searched pellet grill error code and the most common issue Traeger owners face. LEr triggers when the internal RTD temperature probe reads 125F or more below the set temperature for a sustained period. The grill enters shutdown mode to prevent a dangerous pile of unburned pellets in the firepot (which could cause an HEr flare-up on the next start). The root cause in 50% of cases is ash buildup in the firepot blocking airflow and preventing proper combustion. The firepot on Traeger grills is where the fan blows air across the igniter and burning pellets - when ash fills the pot, the fire literally suffocates. The second most common cause (25%) is running out of pellets mid-cook. The auger feeds pellets from the hopper to the firepot, and when the hopper empties, the fire dies within minutes. Cold weather and wind are the third cause - Traeger recommends an insulation blanket for cooking below 35F.
What Does the LEr Code Mean?
LEr = grill temp dropped 125F+ below setpoint. #1 fix: clean the firepot with a shop vac (50% of cases). #2: check pellet supply. #3: use insulation blanket in cold weather.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Symptoms You May Notice
- LEr on display
- Grill shut down mid-cook
- Temperature dropped suddenly
- Smoke stopped coming from grill
- Firepot fire went out
- Pellets accumulating in firepot unburned
Can you reset a Traeger pelletgrill to clear the LEr code?
Turn the grill off. Unplug for 30 seconds. Plug back in. Set to shutdown cycle to clear the firepot. Then restart.
Tools Required for Diagnosis
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
Turn off the grill and let it cool
Turn off the grill and let it cool. Remove grates, drip tray, and heat baffle. Use a shop vacuum to clean ALL ash from the firepot. The pot should be completely empty with the igniter rod and holes visible.
Check the pellet hopper
Start the grill and listen for the induction fan (the combustion fan
If in cold weather (below 35F)
Replacement Parts
If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.
| Part Name | OEM Number | Estimated Price |
|---|---|---|
| Traeger Hot Rod IgniterKIT0019 · $20–$35 | KIT0019 | $20 – $35 |
| Traeger Insulation BlanketModel-specific · $50–$80 | Model-specific | $50 – $80 |
| Traeger RTD Temperature ProbeBAC194 · $15–$25 | BAC194 | $15 – $25 |
Repair vs. Replace Calculator
Frequently Asked Questions
LEr in the middle of a cook - is my food ruined?
Why does my Traeger get LEr only in winter?
I cleaned the firepot but still get LEr. What else?
Related Traeger Pelletgrill Error Codes
Models Known to Experience LEr Errors
This repair applies to most Traeger pelletgrills with this error code. Common model numbers include:
Pro 575, Pro 780, Ironwood 650, Ironwood 885, Timberline 850, Silverton 620
Last verified for technical accuracy on March 15, 2026