Warning: Disconnect power before servicing.
ErrBase

Pit Boss Temperature Swings and Fluctuations: PID Controller Tuning Guide

Quick Answer

Pit Boss temperature swings of +/-30-40F are normal for pellet grills with a standard PID controller. Swings larger than 50F indicate a problem: check the RTD temperature probe for grease buildup (clean it), check the firepot for ash blockage (vacuum it out), and verify the pellets are dry and not degraded. Windy conditions also cause larger temperature swings.

Pit Boss temperature swings are a common complaint because most Pit Boss models use a standard PID controller (not as advanced as Traeger's WiFIRE D2). Temperature fluctuations of +/-30-40F are normal on Pit Boss grills. However, the Pit Boss Platinum series with Wi-Fi uses an upgraded PID algorithm that maintains tighter control (+/-15-20F). If your standard Pit Boss swings excessively: 1) Clean the firepot - inconsistent ash causes inconsistent fire. 2) Check the chimney cap - Pit Boss chimney caps on some models restrict airflow when wind blows across them. Some owners add aftermarket chimney caps with wind guards. 3) Check the gasket seals on the barrel lid - Pit Boss seals can shrink after 1-2 years, allowing air leaks that affect temperature. Replace with high-temp gasket tape ($10-15). 4) The fire management plate (heat deflector) position affects how heat distributes - ensure it is seated correctly.

PitbossPelletgrillSeverity: mediumDifficulty: intermediate75% DIY Success
Time to Fix
10–90 min
Difficulty
intermediate
Parts Cost
—
Tools Needed
Multimeter, Screwdriver set

What Does the TEMP-SWINGS Code Mean?

Pit Boss temp swings of +/-30-40F are normal on standard models.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Component failure in the Pitboss pelletgrill40%
Sensor or thermostat out of operating range24%
Control board fault14%
Power or electrical supply issue12%
Mechanical wear requiring inspection10%

Symptoms You May Notice

  • See symptoms in detailed guide above

Can you reset a Pitboss pelletgrill to clear the TEMP-SWINGS code?

Unplug 60 seconds. Follow model-specific reset if available.

Tools Required for Diagnosis

MultimeterScrewdriver setFlashlight

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

1

Follow the brand-specific diagnosis in the guide above

Follow the brand-specific diagnosis in the guide above. Each brand has different components and failure points.

2

Check for error codes on the display or LED pattern

3

If basic diagnosis does not reveal the cause, run the

Frequently Asked Questions

How do I find my model number?
Check the inside of the door (front-load), inside the lid (top-load), or the back/side panel for a sticker with the model and serial number.
Is it worth repairing?
If the appliance is under 8 years old and repair is under 50% of replacement cost, repair is worthwhile. Check warranty coverage first.
Can I fix this myself?
Many repairs are DIY-friendly with basic tools. Gas appliances and sealed refrigerant systems should be serviced by professionals.

Last verified for technical accuracy on March 15, 2026