My engine light came on and the Honda mechanic said that I needed both up stream oxygen sensors replaced and recommended a fuel injection service. He reset the engine light and hasn't come on again in 6 months. How much should I expect to pay to have both up stream oxygen sensors replaced?
If the light hasn't come back on in that amount of time, chances are everything is working properly. As far as the sensors are concerned, they are about 80 dollars each and take about 20 minutes each to replace. However, as I mentioned, if the light has remained off, they should be fine.