Air Conditioner Compressor Problem !!!

Sep 16, 2025
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Hi All, after starting my 2004 Seat Cordoba 1.4 100 HP gasoline vehicle, approximately 30-35 minutes later, if the air conditioning is initially on, the compressor stops and blows hot air instead of cold. If the air conditioning is off, the compressor blows the same hot air even if it's on. Stopping and restarting the vehicle fixes the problem, but the same error reoccurs for the same amount of time. When I enter the air conditioning service mode and examine the reason for the compressor shutting off in channel 19, I see code 18. My research indicates this is related to the speed sensors. If anyone has experience with this issue and can share it, I would be very grateful.
 

Tell

Full Member
Staff member
Moderator
Pass on that but I did have a pesky fault on my Altea where the AC just stopped. The cheap solution was to pull the AC fuse under the steering wheel on RHD and replug in and restart. It always went on very hot days when you needed AC. Simple solution. Probably would have cost an arm and a leg for the unit to be replaced. The main fuse to it use to get stressed. It would bend. I put in a spare. No change. It was down range to that. I lived with it with the hands and knees solution. You could feel which fuse to pull by counting across o_O.
 
Sep 16, 2025
3
2
Hey @Tell , Thank you so much for taking the time to respond. I'm sorry, I forgot to write here.
Yesterday, I went to an auto electrician;
He replaced the alternator, regulator, and fan in my car. My problem is now resolved. For your information.
Regards.