1. refill your freon
2. if this fails turn the car to the off position and hold the far left and right hvac buttons, i think its A/C and defrost, while holding these buttons turn the car to the on position and hold them down untill something weird happens, it will go through all the a/c functions and at the end of it either everything will go back, or some light will blink numerous times.
If it does then let me know and i'll find you what the blinks mean.
if nothing blinks then its not something the troubleshooting utility can detect.
Check for a faulty compressor
check for a faulty compressor clutch
check for a faulty pressure sensor.
although i believe the trouble shooting method i explained will detect any of these things and give you an error code.
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