Honda 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).
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).
10. Remove the converter cover (A).

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:
Refueling
1. Park with the driver’s side closest
to the service station pump.
2. To open the fuel fill door, push
down on the lever located to the
left of the driver’s seat.
Gasoline is highly f ...
Reverse Lockout
6-speed manual transmission only
The manual transmission has a
lockout so you cannot accidentally
shift from any forward gear to
reverse while the vehicle is moving
at a certain speed. If you ...
A/F Sensor Replacement
Special Tools Required
02 Sensor Wrench Snap-on S6176 or equivalent,
commercially available
1. Disconnect the A/F sensor 4P connector (A), then
remove the A/F sensor (B).
2. Install the parts i ...