P1855 Transfer Case Contact Plate C Open Circuit

Category: Powertrain - Transmission
Severity: Check Engine Light
Applies to: F-150, Super Duty, Explorer

What does P1855 mean on a Ford?

P1855 — Transfer Case Contact Plate C Open Circuit. This Ford-enhanced code applies to F-150, Super Duty, Explorer.

Common causes of P1855

Open plate C winding or track
Broken plate wire
Disconnected plate connector
Corroded pins
Cracked plate substrate

How to fix P1855

Test plate C continuity
Reseat the plate connector
Inspect for cracked substrate
Check pins
Replace the plate if open