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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 238 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> DTC P0531, P0532, or P0533: Air Conditioning (A/C) Refrigerant Pressure Sensor >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Install the appropriate Air Conditioning Service Center.
  3. Verify the high side pressure reading on the Air Conditioning Service Center is within 10% of the scan tool ECM A/C High Side Pressure Sensor parameter.
    • If the reading is not within 10% 

      Refer to Circuit/System Testing.

    • If the reading is within 10% 
  4. All OK.
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