Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Secondary air injection (AIR) system, Bank 2 - leak detected
Cause:
    Intake leak, hose(s) leaking, AIR valve/solenoid

Ford
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Secondary AIR System Monitor Circuit Low Conditions
Cause:
    Engine running with AIR system enabled, then the PCM detected a signal from the secondary AIR monitor that indicated the voltage was low

Land Rover
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Secondary air injection (AIR) system, low flow
Cause:
    Wiring, control valve, air pump, ECM

Saab
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Secondary air injection (AIR) pump relay - short to positive
Cause:
    Wiring short to positive, AIR pump relay

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Secondary air injection (AIR) system, leak detected
Cause:
    Intake leak, hose(s) leaking, AIR valve/solenoid