Engine-CodesGMC – P0533 2016 GMC Sierra

P0533 2016 GMC Sierra Code - A/C Refrigerant Pressure Sensor Circuit High Input

Quick Answer

The P0533 diagnostic trouble code for a 2016 GMC Sierra indicates that there is a high input signal from the A/C refrigerant pressure sensor circuit. Common causes include Faulty A/C refrigerant pressure sensor, Wiring issues or shorts in the sensor circuit, Overcharged 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 2016 GMC Sierra indicates A/C Refrigerant Pressure Sensor Circuit High Input.
Common causes
Common causes include Faulty A/C refrigerant pressure sensor, Wiring issues or shorts in the sensor circuit, Overcharged 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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0533 2016 GMC Sierra Description

The P0533 diagnostic trouble code for a 2016 GMC Sierra indicates that there is a high input signal from the A/C refrigerant pressure sensor circuit. The A/C refrigerant pressure sensor is responsible for monitoring the pressure of the refrigerant in the air conditioning system. When the sensor detects a high input signal, it means that the pressure in the A/C system is above the specified range. This could be due to a fault in the sensor itself, a wiring issue, or a problem with the A/C system that is causing abnormally high pressure.

OBDII Code P0533 2016 GMC Sierra - A/C Refrigerant Pressure Sensor Circuit High Input
P0533 2016 GMC Sierra Code - A/C Refrigerant Pressure Sensor Circuit High Input

Common Causes of P0533 2016 GMC Sierra

  1. Faulty A/C refrigerant pressure sensor
  2. Wiring issues or shorts in the sensor circuit
  3. Overcharged A/C system
  4. Faulty A/C compressor
  5. Blockage in the A/C system causing high pressure

Symptoms of P0533 2016 GMC Sierra

  1. Weak or inconsistent cooling from the A/C system
  2. A/C system may not turn on at all
  3. Check engine light illuminated on the dashboard
  4. Unusual noises coming from the A/C system
  5. Increased fuel consumption due to A/C system inefficiency

How to Fix P0533 2016 GMC Sierra

  1. Use a scan tool to read and clear the diagnostic trouble code
  2. Test the A/C refrigerant pressure sensor for proper operation
  3. Inspect the wiring for any damage or corrosion, repair as needed
  4. Check the A/C system for overcharging or other issues causing high pressure
  5. Replace any faulty components, such as the sensor or compressor

Cost to Fix P0533 2016 GMC Sierra

The cost of repairing a P0533 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. On average, the parts for this repair could range from $50 to $200, with labor costs adding an additional $100 to $300. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to check with local shops for a more accurate estimate.

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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.

Frequently Asked Questions about P0533 2016 GMC Sierra Code

What does the OBDII code P0533 mean for a 2016 GMC Sierra?

The P0533 code indicates a high input signal from the A/C Refrigerant Pressure Sensor, which monitors the pressure in the air conditioning system.

What are the common symptoms of code P0533 in a GMC Sierra?

Symptoms may include the A/C not working, the A/C compressor not engaging, or the illumination of the check engine light.

What causes the P0533 code to appear in a 2016 GMC Sierra?

Common causes include a faulty A/C refrigerant pressure sensor, damaged wiring or connectors, excessive refrigerant pressure, or a malfunctioning A/C control module.

Can overcharged refrigerant cause the P0533 code?

Yes, excessive refrigerant pressure due to overcharging the system can trigger the P0533 code.

How do I diagnose the P0533 code on my GMC Sierra?

Start by checking the refrigerant pressure, inspecting the A/C refrigerant pressure sensor and its wiring for damage, and using a scan tool to verify sensor readings.

Can I drive my GMC Sierra with the P0533 code active?

You can drive the vehicle, but the A/C may not function properly, which could be problematic in hot weather. It's best to address the issue promptly.

How do I fix the P0533 code on a 2016 GMC Sierra?

Repairs might include replacing the A/C refrigerant pressure sensor, repairing damaged wiring or connectors, or correcting refrigerant pressure levels.

Is replacing the A/C refrigerant pressure sensor difficult?

Replacing the sensor is typically straightforward but may require a professional if refrigerant recovery is needed.

How much does it cost to fix the P0533 code on a GMC Sierra?

Repair costs vary but generally range from $100 to $300, depending on whether the sensor, wiring, or refrigerant needs attention.

Can a faulty A/C control module cause the P0533 code?

Yes, while less common, a malfunctioning A/C control module can contribute to the P0533 code and may require replacement.

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