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

Quick Answer

The P0533 GMC code indicates that there is a high input signal detected from the A/C refrigerant pressure sensor circuit in the vehicle. Common causes include Refrigerant leak in the A/C system, Faulty A/C refrigerant pressure sensor, Malfunctioning A/C compressor. 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 GMC indicates A/C Refrigerant Pressure Sensor Circuit High Input.
Common causes
Common causes include Refrigerant leak in the A/C system, Faulty A/C refrigerant pressure sensor, Malfunctioning A/C compressor.
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 07, 2024
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Code P0533 GMC Description

The P0533 GMC code indicates that there is a high input signal detected from the A/C refrigerant pressure sensor circuit in the vehicle. The A/C refrigerant pressure sensor is responsible for monitoring the pressure of the refrigerant in the air conditioning system. This information is crucial for the proper operation of the A/C system as it helps regulate the compressor and ensure optimal cooling performance.

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

Common Causes of P0533 GMC

  1. Refrigerant leak in the A/C system
  2. Faulty A/C refrigerant pressure sensor
  3. Malfunctioning A/C compressor
  4. Electrical issues in the A/C system wiring
  5. Clogged or restricted A/C system components

Symptoms of P0533 GMC

  1. A/C system not cooling properly
  2. A/C system intermittently working
  3. Check Engine Light illuminated
  4. Unusual noises coming from the A/C compressor
  5. Increased fuel consumption due to A/C system inefficiency

How to Fix P0533 GMC

  1. Start by diagnosing the issue using a scan tool to confirm the P0533 code and identify the exact cause of the high input signal.
  2. Inspect the A/C system for any visible signs of refrigerant leaks and repair as necessary.
  3. Test the A/C refrigerant pressure sensor for proper operation and replace if faulty.
  4. Check the A/C compressor for any issues such as damage or malfunction and repair or replace as needed.
  5. Clear the diagnostic trouble codes, reset the system, and test the A/C system to ensure proper operation.

Cost to Fix P0533 GMC

The typical repair costs for addressing a P0533 GMC code can vary depending on the specific cause of the issue. In general, the cost of parts such as a new A/C refrigerant pressure sensor or compressor can range from $100 to $500. Labor costs can also vary but typically fall between $100 and $300. It's important to keep in mind that these are rough estimates, and actual costs may differ based on factors such as the vehicle's make and model, the location of the repair shop, and the extent of the repairs needed. It's recommended to consult with a qualified mechanic for a more accurate cost estimate.

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Information for Specific GMC Models

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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