how to fix the P0130 code on my Volkswagen Golf MK5 (2004-2008)?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery to avoid electrical shorts.
• Allow the engine to cool down before beginning repairs.

2. Remove the Oxygen Sensor

• Locate Bank 1, Sensor 1 oxygen sensor (usually located in the exhaust manifold).
• Use an oxygen sensor socket or wrench to carefully unscrew the sensor from its mounting.
• Disconnect the electrical connector from the sensor.

3. Inspect and Replace

• Inspect the removed sensor for signs of wear, soot, or contamination.
• If faulty, install the new oxygen sensor:
  • Apply anti-seize compound to the threads of the new sensor (if not pre-applied).
  • Screw the new sensor into the exhaust manifold and tighten to the manufacturer's torque specification (typically around 30 ft-lbs).
• Reconnect the electrical connector ensuring a secure fit.

4. Reconnect Battery and Clear Codes

• Reconnect the battery terminal.
• Use the OBD-II scanner to clear the P0130 code from the vehicle’s computer.

5. Test Drive

• Start the engine and allow it to reach operating temperature.
• Take the vehicle for a test drive under various conditions to ensure the check engine light does not reappear.