what does P0135 code indicate for Honda Civic 9th Generation (2012-2015)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety during the repair.
• Allow the engine to cool down before starting work.

2. Inspect and Repair Wiring

• Tools Required: Wire strippers, electrical tape, multimeter
• Inspect the wiring harness leading to the oxygen sensor for any signs of wear or damage.
• If damaged, repair the wiring by cutting the affected section and reconnecting it using solder and heat-shrink tubing.
• Ensure all connections are secure and insulated.

3. Replace Oxygen Sensor

• Tools Required: O2 sensor socket, ratchet, torque wrench
• Remove the upstream oxygen sensor using an O2 sensor socket.
• Apply anti-seize compound to the threads of the new sensor to facilitate future removal.
• Install the new oxygen sensor and torque it to the manufacturer's specification (typically around 30-40 lb-ft).

4. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0135 code and any other related codes.

5. Test Drive

• Start the engine and let it idle for a few minutes to check for any immediate issues.
• Take the vehicle for a test drive to ensure that the check engine light does not return and the engine runs smoothly.