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

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shock.
• Allow the engine to cool before starting work.

2. Inspect and Repair Wiring

• Tools Required: Socket set, multimeter, electrical connector cleaner
• Inspect the wiring harness connected to the oxygen sensor for frays or breaks.
• Clean any corrosion on the connectors with electrical connector cleaner.
• If damaged, repair or replace the wiring as necessary.

3. Replace Oxygen Sensor

• Tools Required: Oxygen sensor socket, ratchet, torque wrench
• Locate the Bank 1 Sensor 1 oxygen sensor, usually found in the exhaust manifold or before the catalytic converter.
• Disconnect the electrical connector from the oxygen sensor.
• Use the oxygen sensor socket to remove the old sensor by turning it counterclockwise.
• Apply anti-seize compound to the threads of the new sensor.
• Install the new oxygen sensor by threading it in clockwise and tightening it to the manufacturer's specified torque (typically around 30 lb-ft).
• Reconnect the electrical connector securely.

4. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature.
• Use the OBD-II scanner to clear the codes and check if the P0131 code reappears.