thermal-runaway Troubleshooting

Thermal runaway error on the Bambu Lab P1S

Source: ProductDB enrichment catalog Confidence: 85% Verified Aug 8, 2026

The printer reports a thermal runaway and shuts down to prevent a fire risk. The thermistor or heater may be faulty.

How to fix Thermal runaway error

Check the thermistor

Inspect the thermistor wiring and reseat it in the hotend. Replace if damaged.

Source: ProductDB enrichment catalog Confidence: 80% Verified Aug 8, 2026

Difficulty: ★★★ Est. 20 min

Verify the heater cartridge

Check the heater cartridge is seated and not shorting. Replace if faulty.

Source: ProductDB enrichment catalog Confidence: 80% Verified Aug 8, 2026

Difficulty: ★★★ Est. 20 min

Replacement parts for the Bambu Lab P1S

Bambu Lab X1E PLA Filament Bambu Lab X1E PTFE Tube Bambu Lab X1E Nozzle Set Bambu Lab X1 Carbon PLA Filament Bambu Lab X1 Carbon PTFE Tube Bambu Lab X1 Carbon Nozzle Set Bambu Lab P1S Nozzle Bambu Lab P1S Hardened Steel Nozzle Bambu Lab P1S PLA Filament Bambu Lab P1S Build Plate Bambu Lab P1S Hotend Assembly Bambu Lab P1S Magnetic Bed Sheet Bambu Lab P1S PTFE Tube Bambu Lab P1S Nozzle Set Bambu Lab A1 PLA Filament Bambu Lab A1 PTFE Tube Bambu Lab A1 Nozzle Set

← All Bambu Lab P1S error codes

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