P1729 4x4 Low Switch Error
What does P1729 mean on a Ford?
P1729 — 4x4 Low Switch Error. This Ford-enhanced code applies to F-150, Super Duty, Explorer, Ranger with electronic 4WD.
Common causes of P1729
- Failed 4x4 Low switch
- Stuck transfer case motor
- Open switch circuit
- Corroded transfer case connector
- 4WD module fault
How to fix P1729
- Cycle through 4WD ranges and note failures
- Test the 4x4 Low switch
- Verify transfer case motor movement
- Inspect connectors
- Service the motor or switch per results