P1409 — IAT - B Circuit Malfunction/ Exhaust Gas Recirculation Closed Position Performance

What it means

P1409 is an OBD-II diagnostic trouble code: IAT - B Circuit Malfunction/ Exhaust Gas Recirculation Closed Position Performance.

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.