Error code 1267 on the Elegoo Centauri Carbon 2 Combo signals a fault on Channel B of the filament detection board located inside the tool head. Like its sibling error 1266, it points to the same physical board — but is triggered by a different detection circuit threshold or channel. Both errors share the same repair path.

What the Error Means

The tool head filament detection board on the Centauri Carbon 2 Combo monitors filament presence through multiple detection channels. Error 1266 corresponds to Channel A; error 1267 corresponds to Channel B. The distinction matters during diagnosis: if only 1267 appears, the Channel B circuit is the primary suspect, while the Channel A circuit still reads normally. If both 1266 and 1267 appear in sequence or together, the entire detection board has likely failed and needs replacement. As with 1266, the most frequent fixable cause of 1267 is a loose connector on either side of the detection board rather than a board failure — re-seating the connectors takes only a few minutes and should always be attempted first.

Step-by-Step Fix

1. Power off the printer and let the tool head cool to room temperature before opening the housing.
2. Remove the four M2 screws (2.0 mm hex screwdriver) from the tool head housing and open it carefully, keeping all internal cables relaxed.
3. Locate the filament detection board inside the housing. It has two connectors: one on the harness side (input) and one on the sensor side (output).
4. Disconnect both connectors, check for bent pins or debris, and reconnect each one firmly and squarely.
5. Reassemble the tool head and power the printer back on.
6. Perform a test load on the affected filament channel. If error 1267 is gone, the connector re-seat was the fix.
7. If error 1267 persists, replace the filament detection board. After installing the new board, reconnect both harnesses, close the housing, and run another test load. If both 1266 and 1267 have been appearing, confirm both are cleared after replacement.

Parts Required

• Filament detection board for Centauri Carbon 2 Combo (replacement, if connector re-seat fails)
• 2.0 mm hex screwdriver

If error 1267 — or error 1266 — returns after fitting a replacement detection board, contact ELEGOO support to investigate the cable harness or wiring upstream of the board.

Frequently asked questions

What does Elegoo 1267 mean?

Error code 1267 on the Elegoo Centauri Carbon 2 Combo signals a fault on Channel B of the filament detection board located inside the tool head. Like its sibling error 1266, it points to the same physical board — but is triggered by a different detection circuit threshold or channel. Both errors share the same repair path.

How do I fix Elegoo 1267?

Error 1267 on the Elegoo Centauri Carbon 2 Combo indicates a Channel B fault on the tool head filament detection board. Learn how to reseat connectors or replace the board.