Peugeot 308 AC problem

Hi, my 2018 Peugeot 308 with a gasoline engine is having A/C issues. The air conditioning system doesn't switch on, so it no longer cools, and there's an error stored. I've checked the fuses, but they seem fine. Any ideas?

4 comment(s)

I had a similar problem with my 308. It might be a faulty A/C compressor or a problem with the pressure switch. Have you checked the AC relay? A faulty relay can cause undervoltage, which could shut down the compressor.

Thanks for the tip! Where is the AC relay located, and how would I test it? Is it something I can do myself, or is it better left to a professional?

It's usually in the engine compartment's fuse box. You can try swapping it with another identical relay to see if it works, but honestly, with A/C issues, it's often best to get it checked at a workshop. They have the right tools to diagnose it properly.

Thanks, I appreciate the advice. Took it to the shop and it turned out to be undervoltage in the vehicle, like you mentioned. They replaced a faulty relay and charged 240€. Everything is working again now!

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