Were you able to verify if using the P Series hotted with the Ceramic Heater for the X1E works?
On my X1E, I use
- Bambu Lab Ceramic Heater for Hotend - X1E Series
- Hotend with Nozzle (X an P series are apparently the same)
- Cooling Fan for Hotend - P1 Series
for assembling a complete hotend.
The last two items are available in the Bambu Lab Store. I checked the manufacturer’s part number on the cooling fan which came with my X1E and the one I got from the Bambu Lab store (“P1 series exclusive”), they are identical.
Beware, when replacing X1E’s TH mainboard and extruder connection board.
I reached out to support after printer was reading 205 C on toolhead and they sent new TH board and connection board.
In my case the new connection board that Bambu sent was faulty and resulted in temperature reading going down to 0 C after device power on. Installing an old connection board along with new main board resolved temperature reading issue.
I can see at least 2 dealers in CZ who offer complete hotends for X1E - “majkl3d” and “richvalsky” both with .cz domain
(Sorry this conference does not allow links)
X1E-I had the same issue. The print seemed like the filament was coming out cold or not flowing good, so I took a look at the hotend and found that the cables were not completely seated in the board. I pushed them in and everything was fine except for the fact that it clogged the nozzle up pretty good, so I decided to change the nozzle, and it is working great now.
I did not have a complete hotend, but did have the bare hotend, so I used existing fan and ceramic heater.
since I have an X1C and X1E, I don’t know if the hotend I installed came from which, but it worked.
I only have hardened hotends and they looked and went together like they were the same.
I do plan on purchasing a couple more complete hotends and found that 3D Universe has them in stock.
I can post this now, since I just ordered them 
I had the same issue. What part did you change? I swapped the complete hotend with a working printer and I am getting the same error so I don’t think it is the hotend. Thanks in advance.
I opened a ticket and asked if the Cooling Fan for Hotend is the same for the P1 Series and the X1E. Bambu Lab replied that although both fans have the same connector and model number, the one for the X1E is more heat resistant.
My self-assembled hotends with P1 fans started throwing a HMS error after some time of use, although the prints look ok.
At the moment, the X1E Hotend Cooling fan is out of stock everywhere in this country, with an ETA several months from now. One would expect a better supply of replacement parts for a printer targeting companies.