P0532 A/C Refrigerant Pressure Sensor Circuit Low Input

Definition: The OBD-II code P0532 indicates that the Powertrain Control Module (PCM) has detected a low voltage signal from the air conditioning (A/C) refrigerant pressure sensor circuit.

P0532 – A/C Refrigerant Pressure Sensor Circuit Low Input

Severity: Moderate

Common Causes

P0532 – A/C Refrigerant Pressure Sensor Circuit Low Input

Common causes:

• Faulty A/C refrigerant pressure sensor
• Low refrigerant level in the A/C system
• Wiring issues such as short circuits or open circuits in the sensor circuit
• Faulty climate control module

 

Common Misdiagnosis

OBD2 Code: P0532

Description: A/C Refrigerant Pressure Sensor Circuit Low Input

Common Misdiagnosis: Replacing the A/C refrigerant pressure sensor without checking for wiring issues or low refrigerant levels.

 

Common Diagnostic Steps

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OBD2 Code: P0532

Description: A/C Refrigerant Pressure Sensor Circuit Low Input

• Verify the code with an OBD-II scanner and reset it to see if it returns.
• Inspect the A/C refrigerant pressure sensor for any visible damage or corrosion.
• Check the wiring and connectors leading to the pressure sensor for signs of wear, damage, or disconnection.
• Measure the voltage at the sensor connector using a multimeter to ensure it’s within manufacturer specifications.
• If applicable, check for proper refrigerant levels in the system as low refrigerant can trigger this code.
• Test the continuity of wires between the sensor and ECM (Engine Control Module).
• If all checks are normal, consider replacing the A/C refrigerant pressure sensor.
• If issues persist after replacement, further diagnosis may be required on ECM functionality related to this circuit.