Toyota Corolla 2004 Model Air-Fuel Ratio Sensor 89467-12880 Universal Oxygen Sensor Replacement

For Toyota Corolla 04 model with idle instability, weak acceleration, noticeably higher fuel consumption, or MIL with “mixture too rich/too lean” codes, the OEM air-fuel ratio sensor may be aging or failed. This sensor monitors exhaust oxygen content in real time, sending signals to the ECU to adjust injection accurately; ensures operation at optimal air-fuel ratio, reducing emissions and improving power and economy. Replacement OEM 89467-12880; fits Corolla 04 (1.8L/1.6L) and other models. Use dedicated socket, avoid damaging threads, and ensure sensor harness does not contact exhaust or chassis to prevent heat-related melting or short circuits.