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

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DTC 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 CLIMATE CONTROL SYSTEM - GENERAL INFORMATION & DIAGNOSTICS , Refrigerant System Tests to verify pressure changes.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	-	-	GO to Pinpoint Test DS .