Chrysler
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    Idle Air Control Motor Circuit Conditions
Cause:
    Key on or engine running, system voltage more than 10v, IAC motor active, then the PCM detected a short in one of the four IAC motor driver circuits for 2.75 seconds

Ford
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    Idle Air Control System Fault Conditions
Cause:
    Engine running, then the PCM detected that the Actual Idle Speed was too low or too high when compared to the Target Idle Speed due to an IAC System fault

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

GM
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    Idle Air Control Valve Circuit Conditions
Cause:
    Key on or engine running, then the PCM detected an open or short condition in the IAC motor or its related circuit.

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