Peugeot 307 AC problem

Hey, I'm having A/C issues with my 2002 Peugeot 307 (gasoline engine). The air conditioning just suddenly stopped working! It doesn't switch on at all, and obviously, it's no longer cooling. I scanned for errors and there's a fault code stored. Could this be the AC relay or pressure switch? Driving me nuts!

4 comment(s)

Could be a few things. Does the compressor engage at all? Any weird noises when you try to turn on the A/C? Have you checked the voltage at the compressor when it's supposed to be running? It might also be undervoltage.

Voltage at the compressor, you say? Where exactly should I be measuring that? And what voltage would be considered 'undervoltage' in this case?

Yeah, check the voltage right at the compressor connector when the A/C is switched on. If it's significantly below 12V, that's your culprit. Given the symptoms and the error code, it really sounds like undervoltage might be the issue. Honestly, for something like this, you're best off taking it to a workshop though.

It was indeed undervoltage, as you suspected. Took it to a shop, and they sorted out the wiring issue. Cost me 240€ in the end. Appreciate the help!

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