Caps missing?

[Dai]

Hi everyone,
Recently put changed my Mazda 3, and upon looking under the hood, looks like 2 caps on some line are missing. Could someone tell me what line this is, and if not having the caps is an issue? Thanks!


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[distr0]

Looks like those are the AC High Pressure and Low Pressure Lines. The caps that go on there are to cover up the schrader valves used to fill/discharge the lines. You should probably get some to cover it back up as to not get gunk in there.

[jeff7670]

Yep AC line. Those need to be replaced

[TheMAN]

go back to the shop and make them replace the caps
they were sloppy and didn't do the job right!

the caps are there to keep stuff from going in, as the others said, but it also helps keep the refrigerant from coming out!