226931JY0A Nissan AIR FUEL RATIO SENSOR, Price: 407.94$, Weight: 0.09kg

Precision Air/Fuel Feedback Sensor for Cleaner Power

This engine feedback sensor is needed to keep the fuel mixture correct in real driving. It constantly checks the oxygen content in the exhaust and reports back to the ECU, so the computer can fine-tune injection timing and fuel amount. The result is smoother idle, better throttle response, lower emissions, and improved fuel economy ✅

How It Works

Built around a sensitive sensing element, it measures exhaust gas and creates a signal the ECU understands. The ECU then adjusts fuel trims in milliseconds. A built-in heater helps it reach working temperature fast, so the engine runs clean even on cold starts ?

Signs It’s Failing

If this sensor is weak or broken, the ECU may guess the mixture. That can cause rough running, hesitation, higher fuel use, strong exhaust smell, failed emission tests, and a persistent check engine light. Long-term driving with a bad signal may overheat the catalytic converter and lead to costly repairs ⚠️

Why Replace On Time

Replacing it restores accurate closed-loop control, protecting the catalyst and keeping your engine tuned the way it should be.

Compatibility

• Lexus LX470