DTC P0507: Idle Control, Rpm High: Condition

DTC is set when brake pedal is depressed, steering wheel is straight and actual engine speed is 200 RPM higher than expected for 14 seconds. PCM will not set DTC when atmospheric pressure is less than 21.3 in. Hg or intake air temperature is less than 14°F. Possible causes are:

• Idle Air Control (IAC) valve malfunction.
• Throttle cable misadjusted.
• Actuator cable misadjusted.
• Throttle valve malfunction.
• Vacuum hoses misrouted.
• PCM malfunction.