Its clear no codes everything ok
With a scan tool.
55 code is not an error code, it signals end of codes. If no other codes preceded it, you have no error codes.
It means that you need to check the trans computer for codes..
Have the Cummins computer checked for trouble codes.
With a scan tool.
That requires a scan tool.
See link below for a complete list of OBDII codes.
I received these error codes for my 1998 Dodge Avenger, 6cyl. 2.5 What does these codes mean? Where would I start to fix these issues? ~THANK YOU ~ P0108 P1297 P0401
With an OBD2 scan tool.
P1693 : Dtc detected in the companion module. You need to check the Ecm and Pcm for codes. Which ever did not have p1693 will have a code.
go to auto zone and they will tell you for free