226936KT0A Nissan SENSOR ASSY-AIR, Price: 474.76$, Weight: 0.214kg

Engine Air Measurement Sensor Assembly

This air sensor assembly is a key input device for Nissan fuel-injection systems. It tells the ECU how much air is entering the engine, so the computer can deliver the correct fuel and keep ignition timing stable. When air data is accurate, you get smooth idle, strong pull, and better fuel economy ✅

Why this part is needed

Modern engines can’t “guess” airflow. This sensor helps the ECU balance the air/fuel ratio in real time during cold start, acceleration, and cruising. It also supports clean emissions and protects the catalytic converter ?

How it works

Air passes through the sensor body and the internal element reads airflow, sending a signal voltage to the ECU. The ECU uses that signal to adjust injector pulse width and throttle/idle control for stable combustion ⚙️

What happens if it’s broken

Common results include rough idle, hesitation, poor MPG, hard starting, black smoke, limp mode, and a check engine light. Running too rich can foul spark plugs; too lean can cause misfires and overheating—both can shorten engine life ❗

Technician tip

Always inspect for intake leaks and dirty air filters before replacement, and avoid touching the sensing element during installation ?️