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Q: strange maybe pressure release sound from right rear sounds like on inside

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strange sound coming from back inside right it sounds like pressure release i think kinda really hard to describe i do have a egr code from engine light could that be from that

My car has 97000 miles.
My car has an automatic transmission.

A: Hey there, the sound you may be hearing is ...

Hey there, the sound you may be hearing is coming from the A/C system expansion valve when refrigerant going through it. You may have an A/C system that is a little low on refrigerant, and needs to be checked for leaks and topped off if no leaks are found. I recommend having a mechanic diagnose the EGR code and sound for you in person to have this resolved.

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