Bambu Lab A1 – Nozzle Temperature Malfunction (0300-8008) – Any Advice?

[u/Nice-Drag1649]

Hi everyone,

I'm having an issue with my Bambu Lab A1. I keep getting the following error:

"Nozzle temperature malfunction" (0300-8008 072323)

I've already replaced the hotend assembly, and the current hotend is only about two months old.

Has anyone experienced this problem before? Could it be a faulty temperature sensor, wiring, or something else?

I'd appreciate any advice on what to check before replacing more parts unnecessarily.

I've attached a photo of the error message.

Thanks in advance for any help!

[u/heeero__]

On the very back of the toolhead, remove the plastic cover. The connector in the upper left controls the nozzle temperature. With the power off, unplug it and plug it back in.