Nissan B24bd-14 [upd] Jun 2026

The Active Grille Shutter is a motorized system that opens and closes flaps in the front bumper. Its purpose is twofold: it stays open at low speeds to maximize engine cooling and closes at highway speeds to reduce aerodynamic drag, which improves fuel economy. Common Symptoms

If your B24BD-14 is a propane model, you will have an Impco or Garretson vaporizer/regulator instead of a mechanical fuel pump. if you switch back to gasoline—the governor is essential for variable load control. nissan b24bd-14

If you or someone you know is dealing with this DTC in a Nissan vehicle: The Active Grille Shutter is a motorized system

Immediately press and hold the , Rear Defrost , and A/C buttons for 5 seconds. if you switch back to gasoline—the governor is

Use an OBD-II scanner to clear the code. If the problem was a "hard fault" (like a broken wire), the light will come back on immediately. If it stays off after a 15-minute drive, the repair was successful.

: This part of the code typically points to a specific actuator or sensor circuit. In many Nissan HVAC systems, similar B24-series codes (like B24B7 or B24BB) refer to air mix or mode door motors .