Check the fuel system lines and hoses for damage, leaks, and deterioration. Replace any damaged parts.

Check all clamps, and make sure they are properly positioned and tightened.

Removal (Part -3)
Remove the secondary HO2S harness bracket (A) from the steering gearbox.
NOTE: Do not disconnect the secondary HO2S 4P connector and the secondary HO2S.
...
HFL Menus
The ignition switch must be in ACCESSORY
or ON
to use HFL.
To use HFL, you must first pair your Bluetooth-compatible cell phone to the
system while the vehicle is parked.
Phone Setup
...
Instrument Panel
This chapter describes the buttons, indicators, and gauges that are used
while driving. ...