how to fix P0135 code on Honda Civic 11th Generation (2022-Present)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Repair Wiring

• Tools Required: Wire stripper, electrical tape, multimeter
• Inspect the oxygen sensor wiring harness for any frays, corrosion, or breaks.
• Repair any damaged wiring using solder or appropriate connectors and cover with electrical tape.
• Ensure all connections are secure.

3. Replace Oxygen Sensor

• Tools Required: O2 sensor socket, torque wrench, penetrating oil
• Locate the oxygen sensor on the exhaust manifold (Bank 1 Sensor 1).
• Apply penetrating oil to the sensor threads if necessary to ease removal.
• Disconnect the electrical connector from the oxygen sensor.
• Use the O2 sensor socket to unscrew the old sensor from the exhaust manifold.
• Install the new oxygen sensor, ensuring it is properly threaded and tightened to the manufacturer’s specifications (typically around 30-40 lb-ft).
• Reconnect the electrical connector securely.

4. Reconnect Battery and Test

• Reconnect the battery terminals.
• Start the engine and let it warm up to operating temperature.
• Monitor the engine for any abnormal sounds or issues post-repair.