Nissan - P155b00

: Frayed or broken wires between the sensor and the ECM can lead to "circuit range" errors.

The error code in Nissan vehicles (specifically the Kicks and Rogue Sport) refers to a Variable Air Intake Manifold Valve Performance issue. It indicates that the Engine Control Module (ECM) has detected that the tumble control valve or intake manifold runner control is not moving as expected or is stuck in the wrong position. What is the P155B Code? nissan p155b00

: The Active Grille Shutter (AGS) is a set of louvers behind the front bumper that opens and closes based on engine temperature and vehicle speed. The Trigger : Frayed or broken wires between the sensor

. This system uses a motorized shutter (active grille) to block or allow airflow to the radiator, helping the engine reach operating temperature faster and improving aerodynamics at high speeds. Quick Breakdown What is the P155B Code

The engine may take longer to reach operating temperature in cold weather. Low to Moderate

: The car's computer has detected a fault with the motor or the "shutters" themselves that control airflow through the front grille. Common Symptoms Illuminated Check Engine Light. Slight decrease in fuel economy. Engine taking longer to warm up in cold weather. Commonly Affected Models : Frequently reported on the Nissan Rogue (2015–2021) and Nissan Altima Potential Causes Debris Obstruction