2019 Nissan Titan XD 5.0 Cummins Did I kill my ECM?

[Colozzus]

Hey all,

Just grabbed a used Titan XD. Went to pull the factory calibration/file to start tinkering with, but after starting the read and about 1-2 minutes in I got a "Timed out" error in VCM editor, and consequently the truck now has "4WD Error" and "Key System Error" on the dash. When I pull DTCs, I get U0100---ECM/PCM lost connection. Sounds like the ECM ate it in the middle of the read. Anyway to recover?
If not, anyone know what process I need to go through to replace the ECM?

Thanks!

[zdwyer]

Haul it to Nissan and put a new computer and have them reflash it. You need the Nissan security cable: or it will brick it.

[Ben.]

You can use a generic J2345 pass through (like a tactrix openport or similar) and the Nissan Ners software to reflash the standard file. The Nissan Ners software is $425USD but if you hunt around you can find "free" versions online. But they are a bit out of date, and you'll still need to download an original file from Nissans online service (about $30usd from memory). Don't bother emailing HP support, they will do nothing for you.