Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Idle control - lean running speed above specification
Cause:
    IAC valve

Chrysler
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    A/C Pressure Sensor Low Input Conditions
Cause:
    Engine running, system voltage over 10.4v, A/C relay energized, then the PCM detected that the signal from the A/C pressure sensor was less than 0.5v, or the signal was less than 0.7v for 22 seconds (with the A/C relay on)

GM
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Cruise Power Management Mode Enabled
Cause:
    Engine running, then the PCM detected that the Cruise Control System was operated in Power Management Mode.

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Idle control - lean running speed above specification
Cause:
    IAC valve