P1822 Transfer Case Clockwise Shift Relay Coil Short to Battery

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

What does P1822 mean on a Ford?

P1822 — Transfer Case Clockwise Shift Relay Coil Short to Battery. This Ford-enhanced code applies to F-150, Super Duty, Explorer.

Common causes of P1822

Relay coil shorted internally
Control wire shorted to power
Corroded socket bridging power
Module driver stuck on
Harness damage

How to fix P1822

Test for shorts to power
Swap the relay to isolate
Inspect the socket
Check module command state
Repair wiring or replace the relay