how to fix P0131 code on Ford Explorer Fifth Generation (2011-2019)

Learn how to diagnose and fix P0131 oxygen sensor circuit issues in Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery to prevent electrical shorts.
• Raise the vehicle safely using jack stands if access to the underside is needed.

2. Oxygen Sensor Replacement

1. Locate the Oxygen Sensor

   • Identify the upstream oxygen sensor on the exhaust manifold or upstream of the catalytic converter.

2. Remove the Old Sensor

   • Use an oxygen sensor socket to unscrew the old sensor from the exhaust pipe.
   • Carefully detach the electrical connector from the sensor.

3. Install the New Sensor

   • Apply anti-seize compound to the threads of the new oxygen sensor (avoid getting it on the sensing element).
   • Screw the new sensor into the exhaust manifold by hand to avoid cross-threading.
   • Tighten the sensor to the manufacturer’s specified torque (typically around 30 lb-ft).

4. Reconnect the Electrical Connector

   • Plug the new sensor's electrical connector back into the harness, ensuring a secure fit.

3. Clear the Codes

• Reconnect the battery and use an OBD-II scanner to clear the P0131 code from the vehicle's computer.

4. Test the Repair

• Start the engine and let it reach operating temperature.
• Monitor the oxygen sensor readings with the scanner to ensure proper operation.