how to fix P0133 code on Honda Civic 9th Generation (2012-2015)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the vehicle battery to prevent electrical shorts.
• Allow the engine to cool down completely.

2. Remove the Upstream O2 Sensor

• Locate the O2 sensor on the exhaust manifold.
• Use an O2 sensor socket or a wrench to carefully unscrew the sensor.
• Disconnect the electrical connector from the O2 sensor.

3. Inspect and Clean

• Inspect the sensor threads and the connector for any signs of damage or corrosion.
• Clean the connector with electrical contact cleaner if necessary.
• Check the wiring harness for frays or breaks.

4. Install New O2 Sensor

• Apply anti-seize compound to the threads of the new O2 sensor (if not pre-coated).
• Screw in the new sensor by hand to avoid cross-threading, then tighten it with the wrench to the manufacturer's specifications (usually around 30 ft-lbs).
• Reconnect the electrical connector securely.

5. Reset the Engine Control Module (ECM)

• Reconnect the vehicle battery.
• Use the OBD-II scanner to clear the trouble codes.