P1901 — Transmission Transfer Case Disengaged Solenoid Short to Ground

What it means

P1901 is an OBD-II diagnostic trouble code: Transmission Transfer Case Disengaged Solenoid Short to Ground.

Typical fix

Confirm the code with an OBD-II scanner, then inspect the component or circuit named above. Consult a vehicle-specific service manual for the full diagnostic and repair procedure.