Honda Accord: Warm Up TWC Removal/Installation - Catalytic Converter System - Fuel and Emissions - Honda Accord MK8 2008-2012 Service ManualHonda Accord: Warm Up TWC Removal/Installation

1. Raise the vehicle on a lift.

2. Remove the secondary H02S (Sensor 2) (see page 11-197).

3. Remove the bolts (A).

4. Remove the WU-TWC bracket (B).


4. Remove the WU-TWC bracket (B).

5. Lower the vehicle.

6. Remove the frame brace (see page 20-306).

7. Remove the A/F sensor (Sensor 1) (see page 11-197).

8. Remove the upper converter cover (A).

9. Remove the WU-TWC (B) and the gaskets (C).


9. Remove the WU-TWC (B) and the gaskets (C).

10. Remove the converter cover (A).

11. Install the parts in the reverse order of removal with


11. Install the parts in the reverse order of removal with new gaskets.

    DTC Troubleshooting
    DTC P0420: Catalyst System Efficiency Below Threshold NOTE: - Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see pa ...

    Under-floorTWC Removal/Installation
    1. Raise the vehicle on a lift. 2. Remove the exhaust pipe hangers (A). 3. Remove the under-floor TWC (B). 4. Install the parts in the reverse order of removal with new gaskets (C) and new s ...

    See also:

    Secondary H02S Replacement
    Special Tools Required 02 Sensor Wrench Snap-on S6176 or equivalent, commercially available 1. Disconnect the secondary H02S 4P connector (A), then remove the secondary H02S (B). 2. Install the ...

    Resetting the Moonroof Control Unit
    Resetting the moonroof is required when any of the following have occurred: • The moonroof was moved manually while the battery was dead or disconnected. • The moonroof motor was replace ...

    Trim Removal/Installation - Trunk Area
    Special Tools Required KTC Trim Tool Set SOJATP2014* * Available through the Honda Tool and Equipment Program; call 888-424-6857 NOTE: - Put on gloves to protect your hands. - Take care not ...