Hello,
This could be a problem with your vehicle's VIAS system. This is how your vehicle's Power-train Control Module (PCM) AKA, "computer" controls the incoming air to keep your vehicle running at idle. If there is a problem with this system than your vehicle won't idle. I have included for you in the diagrams down below factory diagnostic troubleshooting guide as well as a description of how the system works. Please go through them and get back to us with what you find out.
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.