Can't start the engine, PCM not found

[AdrienV8]

Hi everyone, I recently bought a 2019 RAM 1500 DT SPORT 5.7 HEMI Gas only but with an additional system for LPG (by Prins), so it runs with regular gasoline or LPG as I want, it has 125000 km (78000 miles), and last time the engine started was 2 months ago, since then I have a lot of errors going on in the dash when I want to start it, you will see all the errors in the attached files.
In the beginning I thought the battery was failing or too old so I bought a new one, kept it in charge but I still have the same issues, then I replaced the starter, same issues, and last thing I just did 3 days ago was replacing the TIPM so its now brand new. All these things I've replaced for probably nothing.
I did diagnosics via OBD, have a lot of errors, but the PCM is not even found in the CAN network, and lots of other modules like the TCM, Airbags, etc are saying "no communication with PCM/ECM", and when it started 2 months ago I did not have all these errors.
I checked all the grounds I could find everywhere, cleaned them all even those that looked good, but the issues are still there.

All of that said, I would love you guys to help me find the issue here. I'm pretty sure its about the PCM not communicating on the CAN network but I don't now much about CAN things and how to fix it.

Thanks in advance for your help !

 

[kapinallinen2]

Hi everyone, I recently bought a 2019 RAM 1500 DT SPORT 5.7 HEMI Gas only but with an additional system for LPG (by Prins), so it runs with regular gasoline or LPG as I want, it has 125000 km (78000 miles), and last time the engine started was 2 months ago, since then I have a lot of errors going on in the dash when I want to start it, you will see all the errors in the attached files.
In the beginning I thought the battery was failing or too old so I bought a new one, kept it in charge but I still have the same issues, then I replaced the starter, same issues, and last thing I just did 3 days ago was replacing the TIPM so its now brand new. All these things I've replaced for probably nothing.
I did diagnosics via OBD, have a lot of errors, but the PCM is not even found in the CAN network, and lots of other modules like the TCM, Airbags, etc are saying "no communication with PCM/ECM", and when it started 2 months ago I did not have all these errors.
I checked all the grounds I could find everywhere, cleaned them all even those that looked good, but the issues are still there.

All of that said, I would love you guys to help me find the issue here. I'm pretty sure its about the PCM not communicating on the CAN network but I don't now much about CAN things and how to fix it.

Thanks in advance for your help !

Sounds like a bad PCM or something connecting it to the CAN-bus.
Do a search on "star connector"
Might get some pointers from those posts.