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Greetings Pedro,

I have a beautiful 09 997.2 Porsche Carrera 3.6. Recently, the two front radiator fans have run continuously during cold starts for about 30 seconds after starting the car. I bought a Launch scanner, and here are some of the codes that came up.

Note, I do not have any check engine lights come on:

LAUNCH CODES TEST ON MARCH 7, 2025

DME U0424 A/C OPERATOR CONTROL UNIT CONTENT 200600

AIR CONDITIONING 8033 PRESSURE SENSOR

Any suggestions will be highly appreciated.
When the AC is on, the radiator fans run at full speed.
If you switch off the car with the AC on, when you restart the AC will be on by default and hence the fans will run at full speed.
Happy Porsche'ing,
Pedro

Pedro Bonilla
1998 Boxster 986 - 313,000+ miles: [www.PedrosGarage.com]
PCA National Club Racing Scrutineer - PCA National HPDE Instructor - PCA Technical Committee (Boxster/Cayman)


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