P1258 P0117 keeps popping up what do I do.

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! Looks like your 2012 Cadillac CTS is throwing codes P1258 (engine overheating) and P0117 (coolant temperature sensor). Since you've already replaced the water pump, thermostat, and sensor, the issue might be with your cooling fan not kicking on, especially since it's overheating at idle. Check if the fan is running when the engine heats up. If not, it could be a faulty fan relay, a bad fan motor, or even an issue with the fan control module. The no A/C symptom could be related since many systems rely on the fan to cool both the engine and A/C condenser. If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554!