View Full Version : 0549 code

August 21st, 2018, 12:32 PM
I downloaded the beta software, I have access to a lot of the 850,870 and 871s. everytime I try to hook up to them I keep getting this error code. I even tried doing it by a standalone bench harness, which works fine the harrness haw it should. Now I even get the message hooking up to trucks ive already read and hooked up to before, Any ideas or fixes?


August 22nd, 2018, 09:16 AM
That error usually comes up when the software cannot communicate at all with the ECM. Did you manually select the ECM type or did the Auto-Detect work?

August 22nd, 2018, 11:16 AM
I had this, update your v2. this was on a 870 for me....

August 22nd, 2018, 12:32 PM
yeah it auto dectects everytime no problem

August 22nd, 2018, 02:00 PM
Yeah ok so the ECM's and comms are certainly all ok.
As the poster above you said, did you update the firmware in the V2 as well?

We have a new beta coming out shortly that has some improvements for these older ECM's (CM850 being one of them) where Cummins were transitioning between communications protocols.


August 22nd, 2018, 09:55 PM
Just updated my v2 now so ill try it and let you know