P1873 — Transmission Automatic 4-Wheel Drive Indicator (Lamp) Circuit Failure

What it means

P1873 is an OBD-II diagnostic trouble code: Transmission Automatic 4-Wheel Drive Indicator (Lamp) Circuit Failure.

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.