Air-Fuel Ratio Sensor for Precise Engine Control ⚙️

This exhaust-mounted mixture sensor is a key part of the engine management system. It reads the oxygen content in the exhaust gases and helps the ECU adjust fuel injection in real time. Correct air and fuel balance gives smoother running, better power, lower fuel use, and cleaner emissions.

Why This Part Is Needed ?

Modern engines must keep the combustion mixture very accurate. If the mixture is too rich, fuel is wasted and the catalyst can overheat. If it is too lean, the engine may knock, hesitate, or run hot. A good sensor helps protect the engine, catalytic converter, spark plugs, and fuel system.

How It Works ?

The sensor heats up quickly and measures exhaust gas after combustion. It sends a changing signal to the engine control unit. The ECU then increases or reduces fuel delivery to keep the engine working at the best ratio under idle, acceleration, cruising, and load conditions.

Signs of a Failed Sensor ⚠️

When this part is faulty, you may notice higher fuel consumption, rough idle, poor throttle response, black smoke, failed emissions test, or a check engine light. Long driving with a bad sensor can damage the catalytic converter and increase repair cost.

Compatible Models

• Land Cruiser