how to diagnose the P0133 code on Ford F-150 14th Generation (2021-2024)

Solution

1. Preparation

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

2. Remove the Oxygen Sensor

• Locate the upstream oxygen sensor (typically found in the exhaust manifold).
• Use an O2 sensor socket or wrench to carefully unscrew and remove the oxygen sensor from its mounting location.

3. Inspect and Clean

• Visually inspect the oxygen sensor for any signs of contamination or damage.
• Clean the sensor’s connector and wiring harness using electrical contact cleaner to ensure a good connection.

4. Install New Oxygen Sensor

• Apply anti-seize compound (if required) to the threads of the new oxygen sensor.
• Install the new oxygen sensor into the exhaust manifold, tightening it to the manufacturer’s specified torque (usually around 30 lb-ft, but refer to the specific service manual for accuracy).
• Reconnect the electrical connector securely.

5. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach normal operating temperature.
• Monitor the oxygen sensor's performance using a scan tool to ensure it responds correctly and the P0133 code does not reappear.