[alborz]

Chassis node power input 

I get these two masseges on dash
chassis node power input, check fuse 
fault code: 5127
primary fog lamps fault
fault code: 2388

I checked all fuses in engine compartment and inside the cap. all good and have power. 
The chassis code on and off appears on the dash, but the primary fog code is constant. No power at the bulb lights and they'er good. 
2015 Peterbilt 579
Any input will be appreciated.

[burrows_03]

Chassis node power input 

I get these two masseges on dash
chassis node power input, check fuse 
fault code: 5127
primary fog lamps fault
fault code: 2388

I checked all fuses in engine compartment and inside the cap. all good and have power. 
The chassis code on and off appears on the dash, but the primary fog code is constant. No power at the bulb lights and they'er good. 
2015 Peterbilt 579
Any input will be appreciated.

Try to use esa and simulate them. If that doesn't check continuity of the power wire and ground from the chassis node.  Also try running a remote ground with a test light in place of the fog lamp and see if it light ups