2015 Prostar Electrical Issues

[DVT873]

The second code down could be a poor connection somewhere. Check the battery cable that connects to the starter. That is used as a junction point. Several power circuits take off from there and feed the rest of the truck. The best approach is to take the nut off and pull the wires off and get a good look. The ring terminals break and lose contact, corroision can build up etc. Take a look. Also follow the grounds from the battery. Not sure on the Prostars but on the medium duty there are fuse holders in the battery box that supply different computers. The female terminals get loose. They can be squeezed back together. IF you have those fuses, follow the wiring from the batteries and look for connectors. Take thos apart and inspect. Prostars also use "cube" fuses. These sit right on the battery post. Easy to miss. Contacts between them and the wiring can get sketchy.