Hot End Abnormal Temperature Error

Bambu Lab P Series Troubleshooting
1

I recently completed a 3 pcs, 40hr print wiht ASA and had no issues.

I accidentally homed the Z axis without the Bed Plate installed.

Now when I turn on the printer the hot end temp drives to max with a set point of 0.

I tried swapping hotends and the same issue is present (known good).

I am just not sure what failed.

I followed the wiki and it says the next step is to replace the boards. Do I need all 3 ? Is one a common point of this type of failure?

Just want to get back to making my RC car!

2

It may now help but did you try a factory reset?

3

I have. Support thinks its a thermistor but this doesnt make sense since multiple hot ends with multiple thermistors all do the same thing..

4

The TH board was defective, unsure why.