Toyota Corolla Oxygen O2 Sensor

Premium Re-conditioned OEM Oxygen Sensors for Toyota Corolla – Precision Calibrated in Japan

For Toyota Corolla owners in Sri Lanka, maintaining optimal stoichiometric combustion and compliance with stringent emission regulations is highly dependent on the performance of the oxygen (O₂) sensor, also referred to as a lambda sensor. This electrochemical device continuously analyses the oxygen concentration in the exhaust gas stream and transmits a voltage signal to the Engine Control Unit (ECU). Based on this live feedback, the ECU adjusts injector pulse width and ignition timing to sustain the ideal 14.7:1 air–fuel ratio under varying load and temperature conditions.

With prolonged service, O₂ sensors can experience signal drift due to electrode wear, silicon or lead contamination, or prolonged thermal cycling. A degraded sensor introduces erroneous AFR readings, resulting in closed-loop fuel control instability, excessive hydrocarbon or NOx emissions, increased fuel consumption, and possible catalyst damage.

We supply genuine, reconditioned OEM oxygen sensors for Toyota Corolla models, sourced exclusively from Japan. Each unit undergoes advanced ultrasonic cleaning, heater circuit integrity testing, and voltage response calibration to meet or exceed factory specifications.

Available Toyota Corolla Oxygen Sensor Part Numbers:

Corolla ZZE121 / ZZE122 – 89465-12700, 89465-12750, 89465-12760, 89465-02150

Corolla ZZE141 – 89465-52380, 89465-52370

Indicators of Oxygen Sensor Degradation:

ECU diagnostic trouble codes (DTCs) related to upstream/downstream O₂ sensors

Noticeable reduction in KPL and throttle response

Oscillation irregularities in voltage output during live data analysis

Failure to pass exhaust emissions compliance tests

Persistent fuel-rich exhaust odour indicating incomplete combustion

Why Opt for Our Japanese Re-conditioned OEM Sensors:

Exact Connector & Thread Specification – Direct plug-and-play installation

Restored Lambda Accuracy – Ensures stable closed-loop operation and catalytic converter efficiency

Economical Solution – OEM-grade performance at a significantly reduced cost

Sustainable Option – Extends the lifecycle of precision components, reducing environmental waste

Rigorous Bench Testing – Validated under thermal load cycles to ensure reliability in real-world driving conditions

With our inventory of premium reconditioned Toyota Corolla oxygen sensors in Sri Lanka, you can restore precise fuel metering, maximise engine efficiency, and ensure your vehicle operates exactly as engineered by Toyota.