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

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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 -- E-SERIES .
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   - - refer to PINPOINT TEST DS .
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