P1463 - Air Conditioning Pressure Sensor (A/Cp) Insufficient Pressure Change

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2007 Mercury Mountaineer, 2007 Mercury Monterey, 2007 Mercury Montego, 2007 Mercury Milan, and 2007 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.

P1463 - AIR CONDITIONING PRESSURE SENSOR (A/CP) INSUFFICIENT PRESSURE CHANGE

Description:	Each time the A/C clutch engages, the powertrain control module (PCM) is looking for a pressure change in the refrigerant. If the change in pressure is outside of the calibration the DTC sets.
Possible Causes:	A/C system mechanical failure Open ACP or VREF circuit A/C sensor damaged A/C system electrical failure A/C clutch always engaged
Diagnostic Aids:	Verify the A/C system function, including refrigerant charge. Refer to the appropriate CLIMATE CONTROL SYSTEM - GENERAL INFORMATION article.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	-	-	refer to PINPOINT TEST DS .