karltiger3
Seat Leon AC Problem
Summary of the thread
A 2000 Seat Leon owner experienced an issue with the air conditioning system, where the A/C compressor wouldn't engage, and an error code indicated undervoltage. A possible cause suggested was a refrigerant leak leading to low pressure, which could prevent the compressor from starting. Ultimately, the problem was confirmed to be undervoltage, and a workshop resolved it for a fee.
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4 comment(s)
karltiger3 (community.author)
That's interesting. Can you tell me more about the pressure switch or sensor? Where are they located, and how do I check them for a refrigerant leak?
ottolion37
My problem was very similar. I can't say exactly where the pressure switch or sensor is on your model, but usually they're near the A/C compressor or on the refrigerant lines. I didn't check for a leak myself. Given the error code and how complicated it could be, a mechanic might be best. They can diagnose it properly and check the refrigerant.
karltiger3 (community.author)
The problem was indeed undervoltage, like I thought. The A/C compressor was shutting off because of it. The workshop charged me 240€ to fix it.
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SEAT
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LEON
ottolion37
I'm not totally sure, but I had a similar issue with my Leon. The air conditioning would cut in and out. Have you looked at the pressure switch or sensor? Maybe a refrigerant leak is causing low pressure, which would stop the A/C compressor from starting. Just a thought.