4x4 issues/codes

[madman1234509]

Trying to figure out why my 4x4 doesn't work when the hubs are in auto. Pump works, lines are all good, tested them with a vacuum pump and they held fine. Works when hubs are locked. Used a scan tool with streaming data and the 4x4 switch does work, but I'm not quite positive if it was showing the 4x4 solenoid up by the front of the engine bay work working or not. I think that's what I have it narrowed down to but I'm not quite sure if it could be something computer related as well. I have these codes that keep returning in the 4x4 section of the scan tool.... Oh and its not a ford specific scan tool or else Id probably have this sorted out...

p1832
p1876

 

[Stroked777]

If the hubs are locking in auto I would think that the pump isn't pulling enough vacuum to pull them in or that there could be rust or something in the hub keeping is from sliding smoothly to engage

 

[Stroked777]

Wouldn't hurt to pull them apart and check them out and maybe clean them

 

[madman1234509]

The hubs were only locking when they were on lock. Tested the solenoid thats mounted up front, it was bad.... All good now