maximilian_bauer9
Peugeot 307 AC problem
Summary of the thread
A 2002 Peugeot 307 experienced an air conditioning failure, with the system not activating or cooling. The issue was suspected to be related to the AC relay or pressure switch. Upon further investigation, it was identified as an undervoltage problem at the compressor, which was resolved by addressing a wiring issue at a workshop.
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4 comment(s)
maximilian_bauer9 (community.author)
Voltage at the compressor, you say? Where exactly should I be measuring that? And what voltage would be considered 'undervoltage' in this case?
vivien_hartmann87
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.
maximilian_bauer9 (community.author)
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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PEUGEOT
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307
vivien_hartmann87
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.