P1816 — Transmission 4-Wheel Drive Low Indicator Short Circuit To Ground

What it means

P1816 is an OBD-II diagnostic trouble code: Transmission 4-Wheel Drive Low Indicator Short Circuit 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.