how to diagnose a P0133 code on my Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to prevent any electrical shorts.
• Raise the vehicle safely using jack stands if necessary.

2. Inspect and Clean Connections

• Remove the connector from the bank 1 sensor 1 oxygen sensor.
• Inspect the connector for corrosion or damage; clean it using electrical contact cleaner if needed.
• Ensure that the pins are straight and making good contact.

3. Replace Oxygen Sensor

• Using a 22mm oxygen sensor socket, carefully remove the old bank 1 sensor 1 oxygen sensor.
• Apply anti-seize compound on the threads of the new sensor (do not apply to the sensing element).
• Install the new oxygen sensor and torque it to the manufacturer's specifications (generally around 30 lb-ft).
• Reconnect the electrical connector securely.

4. Clear Codes and Test

• Reconnect the battery.
• Use the OBD-II scanner to clear the P0133 code.
• Start the engine and allow it to reach operating temperature.
• Monitor the oxygen sensor readings and ensure they are responding correctly as the engine accelerates and decelerates.