![I cleared all the codes but they come back. 2011 Nissan Quest. I can feel a slight stumble when idling. Should I replace both O2 Sensors, 1 O2 sensor (which one?), or I cleared all the codes but they come back. 2011 Nissan Quest. I can feel a slight stumble when idling. Should I replace both O2 Sensors, 1 O2 sensor (which one?), or](https://preview.redd.it/vbc0ln8hi8m81.jpg?auto=webp&s=cba13c2f959c2cea509b7a9efe4d7c65734cf08d)
I cleared all the codes but they come back. 2011 Nissan Quest. I can feel a slight stumble when idling. Should I replace both O2 Sensors, 1 O2 sensor (which one?), or
![P0137 — Ricks Free Auto Repair Advice Ricks Free Auto Repair Advice | Automotive Repair Tips and How-To P0137 — Ricks Free Auto Repair Advice Ricks Free Auto Repair Advice | Automotive Repair Tips and How-To](https://ricksfreeautorepairadvice.com/wp-content/uploads/2013/05/Oxygen-sensor-schematic.jpg)
P0137 — Ricks Free Auto Repair Advice Ricks Free Auto Repair Advice | Automotive Repair Tips and How-To
![P0137 — Ricks Free Auto Repair Advice Ricks Free Auto Repair Advice | Automotive Repair Tips and How-To P0137 — Ricks Free Auto Repair Advice Ricks Free Auto Repair Advice | Automotive Repair Tips and How-To](https://ricksfreeautorepairadvice.com/wp-content/uploads/2013/05/4-wire-O2-sensor-colors.jpg)