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Engine-Codes – GMC – P0533 2015 GMC Sierra

P0533 2015 GMC Sierra Code - A/C Refrigerant Pressure Sensor Circuit High Input

Quick Answer

The diagnostic trouble code (DTC) P0533 for a 2015 GMC Sierra indicates that there is a problem with the A/C refrigerant pressure sensor circuit, specifically a high input. Common causes include Faulty A/C refrigerant pressure sensor, Wiring issues in the sensor circuit, Excessive refrigerant in the A/C system. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0533 2015 GMC Sierra indicates A/C Refrigerant Pressure Sensor Circuit High Input.
Common causes
Common causes include Faulty A/C refrigerant pressure sensor, Wiring issues in the sensor circuit, Excessive refrigerant in the A/C system.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0533 2015 GMC Sierra Description

The diagnostic trouble code (DTC) P0533 for a 2015 GMC Sierra indicates that there is a problem with the A/C refrigerant pressure sensor circuit, specifically a high input. This sensor is responsible for monitoring the pressure of the refrigerant in the air conditioning system. When the sensor detects a high input, it means that the pressure in the system is above the normal operating range. This can lead to issues with the proper functioning of the A/C system and may result in poor cooling performance or even damage to the system components.

OBDII Code P0533 2015 GMC Sierra - A/C Refrigerant Pressure Sensor Circuit High Input
P0533 2015 GMC Sierra Code - A/C Refrigerant Pressure Sensor Circuit High Input

Common Causes of P0533 2015 GMC Sierra

  1. Faulty A/C refrigerant pressure sensor.
  2. Wiring issues in the sensor circuit.
  3. Excessive refrigerant in the A/C system.
  4. Malfunctioning A/C compressor.
  5. Blockage in the A/C system causing pressure buildup.

Symptoms of P0533 2015 GMC Sierra

  1. Reduced cooling performance from the A/C system.
  2. A/C system blowing warm air instead of cold.
  3. Unusual noises coming from the A/C compressor.
  4. A/C system cycling on and off frequently.
  5. Check engine light illuminated on the dashboard.

How to Fix P0533 2015 GMC Sierra

  1. Use a scan tool to retrieve the DTC and diagnose the issue.
  2. Inspect the A/C refrigerant pressure sensor and its wiring for any damage or corrosion.
  3. Test the sensor using a multimeter to determine if it is functioning properly.
  4. Check the A/C system for excessive refrigerant and perform a pressure test to identify any leaks.
  5. Replace the A/C refrigerant pressure sensor if it is found to be faulty, and recharge the A/C system to the correct pressure levels.

Cost to Fix P0533 2015 GMC Sierra

The cost to repair a P0533 DTC for the A/C refrigerant pressure sensor circuit high input on a 2015 GMC Sierra can vary depending on the specific cause of the issue. However, as a rough estimate, the parts for this repair, including a new A/C refrigerant pressure sensor, may range from $50 to $150. Labor costs can add an additional $100 to $200, depending on the shop's hourly rates and the complexity of the repair. Keep in mind that additional costs may apply if other A/C system components need to be replaced or if there are multiple issues contributing to the high input code. It is recommended to consult with a qualified mechanic for a more accurate estimate based on your vehicle's specific needs.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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