Ah, not good...

I have a 2016 4Runner TRD PRO and when I started it today I immediately noticed a rough idle followed by the dashboard showing:

• Check Engine light flashing
• TRAC OFF light flashing
• Multi-Terrain Select light flashing

ODB shows codes:

• P0303 Cylinder 3 Misfire
• P1605 Rough Idle

When I opened the hood there was a little sign of grassy material, nothing at all like a nest, but I'm pretty sure a rat / mouse did some damage. See the attached pics where there is some chewed tubing.

What is this chewed tubing for? Can I temporarily duct tape it back together?

I'm not a mechanic so have an appointment at a shop on Wednesday. But anything else I can troubleshoot before then? I'll take a closer look at the engine bay tomorrow to see if there is any other evidence of damage.

Thank you for any advice....

Pictures:

Attached Images