DTC P0507: Description
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The DTC P0507 Idle Speed High diagnostic monitors the engine speed. The powertrain control module (PCM) controls the throttle actuator control (TAC) motor in order to regulate the air flow through the throttle body. The amount of air flowing through the throttle body determines the engine speed. If there is a malfunction in the TAC system, an intake air leak, or other engine control system fault, DTC P0507 can set.