how to fix P0131 oxygen sensor code in Ford F-150 Fourteenth Generation (2021-present)

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, safety glasses, gloves.
• Disconnect the negative battery terminal to prevent electrical shock or short circuits.

2. Remove the Faulty O2 Sensor

• Locate the O2 sensor in Bank 1, Sensor 1, which is generally located upstream of the catalytic converter.
• Use a socket wrench with an O2 sensor socket to remove the sensor by turning it counterclockwise.
• Take care not to damage the threads in the exhaust manifold.

3. Install the New O2 Sensor

• Apply anti-seize compound to the threads of the new O2 sensor to prevent it from seizing in the future.
• Screw the new O2 sensor into the exhaust manifold by hand to avoid cross-threading.
• Use the socket wrench to tighten the sensor to the manufacturer’s specified torque (typically around 30-40 lb-ft).

4. Reconnect Electrical Connectors

• Plug the electrical connector back into the new O2 sensor, ensuring it clicks securely into place.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0131 code from the vehicle's computer.
• Start the engine and allow it to reach operating temperature.