how to fix P0135 oxygen sensor issue in Skoda Octavia NFL (2020-Present)

Learn how to diagnose and fix P0135 oxygen sensor issue in Skoda Octavia NFL. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the vehicle battery to prevent electrical shorts.

Tools Required:

• OBD-II scanner
• Multimeter
• Socket set
• Torque wrench
• Wire brush
• Electrical contact cleaner

2. Inspect Wiring and Connectors

• Locate the oxygen sensor on the exhaust system.
• Visually inspect the wiring harness and connector for any visible damage or corrosion.
• Use a wire brush and electrical contact cleaner to clean any corroded terminals.

3. Replace Oxygen Sensor

• Step 1: Disconnect the oxygen sensor connector.
• Step 2: Use a socket or wrench to remove the oxygen sensor from its mounting location.
• Step 3: Install the new oxygen sensor by threading it in by hand and then tightening it to the manufacturer’s torque specification (typically around 30-45 Nm).
• Step 4: Reconnect the oxygen sensor wiring harness.

4. Reconnect Battery and Clear Codes

• Reconnect the vehicle battery.
• Use the OBD-II scanner to clear the P0135 code from the vehicle’s computer.

5. Test Drive

• Conduct a test drive to ensure the check engine light does not reappear and monitor engine performance.