Problème de température de buse

Hello,
My printer: P1S
after changing the nozzle, the ceramic radiator and the temperature probe, I launched a test print several times, with PETG, 70°C plate, 251°C nozzle and each time, an alert is displayed after a few minutes of printing, and often at the same time of printing. “Nozzle temperature problem” An alert code is also displayed 0300-8008 154926 or code 0300-8008 164826

I can’t find these two codes in the Bambu wiki documentation.

The print head returns to the purge tank and the nozzle temperature stabilizes at 90 °C. Printing is stopped.

Who can tell me what is the cause of this problem and how to fix it? Thank you all.

Nonstop Nozzle Temperature Error: 0300 8008 - Bambu Lab P1 Series / Troubleshooting - Bambu Lab Community Forum
see if this helps