Generic
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    Idle Air Control System RPM Higher Than Expected

GM
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    Idle Speed High Conditions
Cause:
    Engine runtime over 5 minutes, Closed Throttle switch "on", ECT input more than 176°F, IAT input from 14-122°F, BARO input more than 75 kPa, system voltage over 12v, then the PCM detected the Actual idle speed was above Target idle speed by over 200 rpm.

Nissan
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    Idle speed control system - RPM too high
Cause:
    Wiring, ISC system, ECM