![P2251 Code: O2 Sensor Negative Current Control Circuit / Open Bank 1 Sensor 1 - In The Garage with CarParts.com P2251 Code: O2 Sensor Negative Current Control Circuit / Open Bank 1 Sensor 1 - In The Garage with CarParts.com](https://www.carparts.com/blog/wp-content/uploads/2022/08/drivewire-car-upstream-oxygen-sensor-1024x602.jpg)
P2251 Code: O2 Sensor Negative Current Control Circuit / Open Bank 1 Sensor 1 - In The Garage with CarParts.com
![2006 MAZDA3 P0131 P0134 P2251 - UPSTREAM OXYGEN SENSOR REPLACEMENT (BANK 1 SENSOR 1) - EASY DIY! - YouTube 2006 MAZDA3 P0131 P0134 P2251 - UPSTREAM OXYGEN SENSOR REPLACEMENT (BANK 1 SENSOR 1) - EASY DIY! - YouTube](https://i.ytimg.com/vi/5sP5tcUa1eo/sddefault.jpg)
2006 MAZDA3 P0131 P0134 P2251 - UPSTREAM OXYGEN SENSOR REPLACEMENT (BANK 1 SENSOR 1) - EASY DIY! - YouTube
![I have a 2007 Mazda 3 with a diagnostic code of p2251 and the car seems to hesitate, can anyone help? I have a 2007 Mazda 3 with a diagnostic code of p2251 and the car seems to hesitate, can anyone help?](https://ww2.justanswer.com/uploads/supermazdatech/2011-01-27_050615_2251.gif)
I have a 2007 Mazda 3 with a diagnostic code of p2251 and the car seems to hesitate, can anyone help?
![P2251 Code: O2 Sensor Negative Current Control Circuit / Open Bank 1 Sensor 1 - In The Garage with CarParts.com P2251 Code: O2 Sensor Negative Current Control Circuit / Open Bank 1 Sensor 1 - In The Garage with CarParts.com](https://www.carparts.com/blog/wp-content/webp-express/webp-images/doc-root/wp-content/uploads/2022/08/An-Upstream-Oxygen-Sensor-installed-on-car.jpg.webp)