Review on 🔬 Denso 234-4620 Oxygen Sensor: Precise Air/Fuel Monitoring for Enhanced Engine Performance by Noah Lewis

If you are getting codes P1166 Mass Air Flow Sensor Bank 1 and P1167 Sensor 1 Heater you will need a Denso Air Fuel Ratio Sensor 234-9014. This is the top sensor. The 2002 Accord does not use a traditional O2 sensor but uses a fuel ratio sensor. What to look for and what is very important (1) Motor type, mine is F23A4 which can be found on the side panel of the motor on the drive side. (2) Take out the original sensor and you will see the model on my Densor 192400-1020 is Denso 234-9014. For two codes, do not take the Denso 234-4620 or Denso oxygen sensor. 234-4209 oxygen sensor.