Is your Nissan Sentra engine idling rough, and check engine light is on due to a faulty oxygen sensor? Learn how to fix the problem by replacing your vehicle’s oxygen sensor. This guide is a step-by-step procedure for replacing the upstream/upper O2 sensor on a Nissan Sentra 2013-2019.

What you will need

  • Nissan Sentra Oxygen Sensor
  • Mechanic Metric Toolset
    • 22mm O2 Socket

Procedure

  1. Open the hood. Pull the hood release under the dashboard and unlock the hood latch, then pull the hood up and secure it open using the hood support.Pulling the hood release of the Nissan Sentra.Sliding the tab to the left to unlock the hood latch.
  2. Remove the engine cover by pulling it up and out of the vehicle.Removing the engine cover of the Nissan Sentra.Removing the engine cover of the Nissan Sentra 2.
  3. Locate the O2 sensor on the back of the engine near the firewall.The upstream O2 sensor of the Nissan Sentra.
  4. Disconnect the electrical connector of the O2 sensor by pressing the clip and pulling the connector out.Disconnecting the electrical connector of the Nissan Sentra.
  5. Loosen and remove the O2 sensor by using a 22mm O2 socket.Removing the oxygen sensor of the Nissan Sentra.Removing the oxygen sensor of the Nissan Sentra.
  6. Line up the new O2 sensor and tighten it using the O2 socket. Installing the new oxygen sensor of the Nissan Sentra.
  7. Connect the electrical connector of the O2 sensor by pushing it into its connection port.Connecting the electrical connector of the oxygen sensor.
  8. Line up the engine cover back to the vehicle and press it to set it in.Reinstalling the Engine cover of the Nissan Sentra.

Check Engine Light On

YOUCANIC UCAN2 SCANNER

If the check engine light is on after replacing the oxygen sensor, you can use the YOUCANIC Full System Scanner to reset the check engine light. This scanner can also read and clear fault codes through every vehicle’s control module.

We hope you find the 2013–2019 Nissan Sentra Upstream/Upper O2 Sensor Replacement guide helpful. Check these troubleshooting and repair guides for more help on your Nissan.

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