Review on Efficiently Monitor Air Fuel Ratio with Denso 234-5010 Sensor by Jimmy Breaux

I ordered an O2 sensor for a 2004 MDX that gave out codes P0420 and P2251 which cleared with the new sensor. As mentioned in another review, the sensor looked a little different, but the threads and connector were the same as the OEM. Removing the original sensor wasn't too difficult with Harbor Freight's O2 sensor tool, but disconnecting the sensor cable was a little tricky. The sensor connector has two protrusions and you must first disconnect the connector from the cylinder block and then the wire from the connector.