my Toyota Tacoma N300 (2016-Present) has a P0420 code, what does that mean?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the vehicle battery to ensure safety during the repair.
• Raise the vehicle using jack stands and secure it.

2. Inspect and Replace Oxygen Sensors

• Sub-steps:
  1. Locate the upstream and downstream oxygen sensors on the exhaust system.
  2. Disconnect the electrical connectors from the sensors.
  3. Use an oxygen sensor socket to remove the sensors.
  4. Install new oxygen sensors and reconnect the electrical connectors.
• Tools Required:
  • Oxygen sensor socket
  • Ratchet and extension

3. Inspect and Replace Catalytic Converter

• Sub-steps:
  1. Remove the exhaust pipe connected to the catalytic converter by loosening the clamps or bolts.
  2. Detach the catalytic converter from the vehicle.
  3. Inspect the old catalytic converter for damage or blockage.
  4. Install the new catalytic converter, ensuring proper alignment and sealing.
  5. Reattach the exhaust pipe and secure with clamps or bolts.
• Tools Required:
  • Socket set
  • Torque wrench

4. Clear Error Codes

• Sub-steps:
  1. Reconnect the vehicle battery.
  2. Use the OBD-II scanner to clear the P0420 code.
• Tools Required:
  • OBD-II scanner