Browse Honda Accord O2 Sensor Spacer. Get Honda Accord Oxygen Sensor Replacement Cost & Honda Accord O2 Sensors. Find Honda Accord Oxygen Sensor Location. Maintaining optimal performance in your Honda Accord hinges on the health of your O2 sensors, which monitor the oxygen level in your exhaust, enabling efficient fuel combustion. Extend their lifespan by avoiding short trips that prevent the sensor from reaching operating temperature, and use fuel additives cautiously, as these can coat and damage the sensor. Signs that your O2 sensors may require replacement include poor fuel economy and a check engine light. When choosing a new sensor, opt for high-quality options that match your Accord's specifications?whether it's a heated or unheated type?to ensure accurate readings and seamless installation. Shop with us to find the perfect fit for your vehicle, and benefit from our hassle-free installation guides to get back on the road swiftly.