Code p0507 on 2003 mitsubishi eclipse

What is your question?

Hello, about 2 months ago my car would have a rough idle and stall out so I changed the spark plugs, wires, and coils and it would still act the same. Then I cleaned the throttle body, changed the tps and iac and the car was better but had a high idle. I took the car to a shop and they adjusted the rpms. A month later I got the code p0507 and when I turn on the car the idle is fine but once I start driving the rpms stay around 1100. I already checked for vacuum leaks and didn't find any. What else could be the issue? Thank you for any help