Pit Boss · Troubleshooting
Pit Boss Error Codes and Common Problems: A Pitmaster's Troubleshooting Guide
The two Pit Boss error codes that bring every search to a halt are Err (or ErH / ErL — temperature probe out of range) and the 'No Pellets' warning on the newer touchscreen controllers. Both have narrow, well-documented causes that resolve in under 15 minutes if you work the list in order. This guide walks the top five failures: flameout mid-cook, E3 / EX6 startup failure, auger jam, wild temperature swings, and heating-element shutdown.
By Reed · Updated November 9, 2026
What you need
- Shop vacuum
- Multimeter (for the hot rod / igniter)
- Phillips screwdriver
- Flashlight
- Spare bag of dry pellets
- Owner's manual for your specific model
Step by step
Read the controller and look up the exact code
The letter + number combo matters. 'Err' alone usually means the thermocouple reading is outside the valid range (shorted probe, unplugged probe, or ambient temperature below 40F at startup — the manuals for Titan and Pro Series II spell this out explicitly). 'ErH' = thermocouple reading too high; 'ErL' = too low. 'No Pellets' on the touchscreen controllers is a different beast — the controller timed out waiting for the firepot to hit ignition temperature, and the fix is almost always pellets or firepot ash, not the controller.
Rule out wet or swollen pellets
Open the hopper, grab a handful of pellets, and squeeze them. Dry pellets snap crisp; damp pellets bend, crumble, or feel soft. If they bend, empty the hopper completely and refill from a fresh sealed bag. Dense pitbossforum.com threads on auger jam and flameout trace to this one issue more often than any other — even people a year into a new grill forget that pellets go bad in a humid garage.
Vacuum the firepot before you blame the controller
Pull the grates, flame broiler, and heat deflector, and look at the firepot. A firepot caked with ash cannot see the hot rod cleanly, so pellets fall onto cold ash instead of hot metal, and ignition times out. The Titan manual calls this out as the first troubleshooting step for the 'No Pellets' warning and every E3 / EX6 variant. Vacuum completely — including around the hot rod — and retest.
Check the hot rod (igniter) with a multimeter
With the grill unplugged and cold, remove the hopper's back service panel and locate the two wires feeding the hot rod. Measure resistance across them: a healthy Pit Boss hot rod reads 40 to 60 ohms. Open-circuit (OL) means the hot rod is burned out — a common failure after 100+ cooks, and a $25 to $40 replacement part. Tvwbb.com and smokingmeatforums.com have multiple threads where Err / E3 traced to this one part.
Clear the auger tube (burn-back and jam recovery)
If you've had a flameout and you smell smoke coming from the hopper, that's burn-back — fire crept up the auger tube into the pellet column. Open the hopper, scoop out all pellets immediately, and let the auger cool. Pull the auger service panel per your model's manual and inspect the tube for scorched pellets or a melted blob of pellet char. Vacuum it out, then run a dry hopper cycle to clear any remaining debris before refilling with fresh pellets.
Check the induction fan on the hopper side
The combustion fan at the base of the hopper pushes air into the firepot — a stuck or dusty fan starves the fire and produces the wild temperature swings and 'puffing' smoke pattern that smokingmeatforums.com threads blame on 'bad PID.' Unplug the grill, pull the rear service panel, and spin the fan by hand. It should spin freely with no scraping. If it drags, vacuum the blades and the housing.
Reset the controller and run a startup cycle
After pellets, firepot, hot rod, and fan are all verified good, unplug the grill for 60 seconds, plug back in, and run the startup cycle at the P-4 setting with the lid open until the fire establishes. If the grill makes it through startup and holds temp for 15 minutes, you're done. If the same error returns, the controller itself is suspect — Pit Boss support will swap it under warranty if the serial number and purchase date check out.
Common mistakes
- Blaming the controller before cleaning the firepot. A controller that can't ignite the firepot throws Err, E3, or 'No Pellets' — the exact same codes it would throw if it were actually broken. Vacuum the firepot every time before you order a $120 replacement controller. On pitbossforum.com, ash is the cause four times out of five.
- Refilling the hopper after a flameout without checking for burn-back. If a flameout left scorched pellets in the auger tube, adding fresh pellets on top drops them into a still-hot tube and can reignite inside the hopper. Scoop the hopper out, inspect the auger tube with a flashlight, and only refill when the tube is cold and clean.
- Running a short cook in cold weather without a thermal blanket. Below 40F ambient, the firepot loses heat faster than the hot rod can replace it, and the grill flames out mid-cook. The Pit Boss insulated blanket (model-specific — Austin XL, Lockhart, Pro Series each have their own) is a real fix, not a cosmetic add-on. Below 20F, any pellet grill will struggle.
- Using softwood or pellet-stove pellets in a food grill. Pellet-stove pellets may contain binders, dust, or softwood species not safe for cooking. They also burn differently and overheat the hot rod. Use only food-grade hardwood pellets rated for pellet grills — Pit Boss's own branded pellets are the safe default.
- Opening the lid repeatedly during startup. Pit Boss manuals call for the lid to stay OPEN during the first 10 minutes of startup (the P-4 cycle) and CLOSED for the rest of the cook. Opening it mid-cook on a cold day lets temperature crash by 100 to 200F, which looks like a 'temperature swing problem' but is just physics.
Hands-on tips
- Keep the owner's manual PDF for your specific model on your phone. The 820, 1000D3, Navigator, and Titan each have slightly different error-code tables, and the official support hub at pitboss-grills.com mirrors every current and legacy manual.
- Buy a spare hot rod before you need one. They're $25 to $40 online and the wait time if you order after a failure means a weekend with no cook.
- In humid climates, store pellets with a desiccant pack or a food-grade silica tub in the bucket. Dry pellets solve 60% of the 'my grill is possessed' complaints on the forums.
- The Grill Guide app pushes firmware updates for the connected Navigator models — keep the firmware current, because Pit Boss has patched temperature-control bugs multiple times through OTAs.
- When you call Pit Boss support, lead with your model, serial, and the exact error code, plus a one-sentence summary of what you already tried (vacuum firepot, hot rod ohms, fan spin). It cuts the call time in half.
- If you see fire coming out of the hopper, kill the power immediately — don't wait for the shutdown cycle. Then follow the burn-back recovery steps above.
Questions people ask
What does Err or ErH mean on a Pit Boss?
The thermocouple is reading outside the valid range — most commonly because the probe is shorted, unplugged, or the ambient temperature is below 40F. Check the probe seat, unplug and reseat the connector, and let the grill warm to room temp if it was stored in the cold. Per the Titan and Pro Series II manuals, this is a sensor error, not a controller failure.
Why does my Pit Boss say 'No Pellets' when the hopper is full?
The controller timed out waiting for the firepot to reach ignition temperature. The most common causes are ash buildup in the firepot, wet or swollen pellets bridging over the auger inlet, or a failing hot rod. Vacuum the firepot first, swap in fresh dry pellets second, and test the hot rod resistance (40 to 60 ohms healthy) third.
Can I fix burn-back myself or do I need to send the grill in?
Minor burn-back (scorched pellets in the auger tube, no damage to the auger itself) is a vacuum-and-restart fix. Severe burn-back that melted plastic in the hopper or scorched the auger motor needs Pit Boss support for a parts assessment — call before you cook again, and don't try to run the auger if it's binding.
Why are my Pit Boss temps swinging 50 degrees up and down?
Three usual suspects: a dirty combustion fan (unplug, spin by hand, vacuum the blades), pellets that are inconsistent size or damp (empty hopper, refill fresh), or a flame broiler plate installed upside down after a cleaning (check your model's manual for the correct orientation). All three show up repeatedly on pitbossforum.com and smokingmeatforums.com.
Should I call Pit Boss support or try to fix it myself?
If the grill is under warranty and the issue is the controller, heating element, auger motor, or anything inside the firebox, call Pit Boss support first — they'll ship parts under warranty but you need to document the failure before replacing anything. Pellets, firepot vacuum, and hot rod replacement are all owner-serviceable fixes.
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