B2109 — Heated Wind Shield Relay Short to Vbatt (changed from Failure 2/6/97)

What it means

B2109 is an OBD-II diagnostic trouble code: Heated Wind Shield Relay Short to Vbatt (changed from Failure 2/6/97).

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.