Heated O2 Sensor for Nissan Exhaust Control

This premium lambda probe keeps your engine’s air‑fuel mix in the sweet spot, cutting emissions, saving fuel, and protecting the catalytic converter. The heater warms the sensing tip fast after startup, so the ECU can enter closed loop quickly for smooth drivability .

Why you need it

Modern ECUs depend on accurate oxygen feedback to hold 14.7:1 under cruise and idle. A healthy heated oxygen sensor improves cold‑start manners, MPG, throttle response, and tailpipe cleanliness.

How it works

A zirconia element creates 0.1–0.9 V based on exhaust oxygen. The built‑in heater brings the tip to ~600°C, stabilizing readings within seconds. The ECU then trims fuel several times per second to maintain the ideal mixture ⚙️.

If it fails

Expect rough idle, flat spots, higher fuel use, sulfur smell, black deposits, and an illuminated MIL . Common codes include heater and circuit faults. Prolonged failure can overheat or poison the catalytic converter, risking inspection failure and costly repairs.

Tech tips

Install upstream of the cat, thread M18×1.5. Use a sensor-safe anti-seize on threads only, never on the tip. Route the harness away from hot parts, clear codes, and verify fuel trims and response time ️.

Compatible models

• Pulsar
• Xterra
• Frontier
• Sunny