The Bambu Lab TH Board (Toolhead Board) is the OEM replacement for the control board mounted directly in the printhead of Bambu Lab printers. This board manages all toolhead-level functions including hotend temperature control, part cooling fan output, filament runout sensing, and nozzle wiper activation, making it the central hub of the toolhead's electronics.

When the TH Board fails or is damaged, it can cause a range of symptoms including temperature errors, cooling fan failure, filament sensor drop-outs, or complete toolhead malfunction. Replacing it with this OEM board restores full toolhead functionality and is a direct fit for the toolhead assemblies used across the Bambu Lab P1 and X1 series.

Key features

• OEM toolhead control board (TH Board) managing all printhead-level electronic functions.
• Controls hotend temperature sensing, part cooling fan, and filament runout detection.
• Restores complete toolhead operation when the original board is damaged or non-functional.
• Direct OEM fit for toolhead assemblies across the P1 and X1 printer series.
• Related component: TH Board FPC Cable (article 210000005811) for board-to-mainboard connection.

Compatible with: Bambu Lab P1P, P1S, X1, X1C, X1E