Ford
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    A/C Pressure Sensor Insufficient Pressure Change Conditions
Cause:
    Engine running, A/C clutch cycled, then the PCM detected insufficient pressure change on the A/C pressure sensor circuit during cycling.

Mercedes-Benz
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Secondary air injection (AIR) system - defective
Cause:
    Wiring, hoses, AIR pump relay, AIR valve/solenoid