AutoCodes – Chevrolet – P0533 2016 Chevrolet Silverado

P0533 2016 Chevrolet Silverado Code - A/C Refrigerant Pressure Sensor Circuit High Input

Quick Answer

The Engine Control Module (ECM) monitors the high side refrigerant pressure through the A/C Refrigerant Pressure Sensor. Common causes include A/C system low or overcharged with refrigerant, Cooling fans are inoperative, Faulty A/C Refrigerant Pressure Sensor. 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 Chevrolet Silverado indicates A/C Refrigerant Pressure Sensor Circuit High Input.
Common causes: Common causes include A/C system low or overcharged with refrigerant, Cooling fans are inoperative, Faulty A/C Refrigerant Pressure Sensor.
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.

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Code Popularity 721

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 02, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0533 2016 Chevrolet Silverado Description

The Engine Control Module (ECM) monitors the high side refrigerant pressure through the A/C Refrigerant Pressure Sensor. The ECM supplies a 5 V reference and a low reference to the sensor. Changes in the A/C refrigerant pressure cause the sensor signal to the ECM to vary. When the pressure is high, the signal voltage is high. When the pressure is low, the signal voltage is low. The ECM may use this information to turn the cooling fans on as well as to monitor clutch engagement. The HVAC module will receive the A/C refrigerant pressure information from the ECM via serial data. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the A/C pressure is more than 428 psi (4.92 V).

OBDII Code P0533 2016 Chevrolet Silverado - A/C Refrigerant Pressure Sensor Circuit High Input - AutoCodes.com — P0533 2016 Chevrolet Silverado Code - A/C Refrigerant Pressure Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0533 2016 Chevrolet Silverado?

A/C system low or overcharged with refrigerant
Cooling fans are inoperative
Faulty A/C Refrigerant Pressure Sensor
A/C Refrigerant Pressure Sensor circuit open or shorted
A/C Refrigerant Pressure Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0533 2016 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0533 2016 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0533 2016 Chevrolet Silverado code?

Need more information on how to fix the P0533 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 Chevrolet Silverado Code

What does code P0533 mean for a 2016 Chevrolet Silverado?

Code P0533 indicates that the A/C refrigerant pressure sensor circuit is reporting a high input, which could mean the pressure in the system is too high or there is an electrical issue.

What are common symptoms of code P0533 in a Chevrolet Silverado?

Symptoms can include the A/C system not working, reduced cooling performance, or the A/C system shutting off entirely to prevent damage.

What causes the P0533 code in a 2016 Chevrolet Silverado?

Possible causes include an overcharged A/C refrigerant system, a faulty refrigerant pressure sensor, wiring issues such as shorts or opens in the circuit, or a malfunctioning A/C control module.

Can driving with code P0533 damage my vehicle?

While driving is typically safe, prolonged operation without fixing the issue can lead to A/C system damage due to excessive pressure or electrical faults.

How do I diagnose code P0533 in a Chevrolet Silverado?

Start by checking the refrigerant pressure levels, inspecting the wiring and connectors for damage, and testing the refrigerant pressure sensor with a multimeter or scan tool.

How can I fix code P0533 on a 2016 Chevrolet Silverado?

Repairs may include replacing the refrigerant pressure sensor, fixing damaged wiring or connectors, or adjusting the refrigerant levels if they are too high.

What tools are needed to diagnose and repair code P0533?

Tools may include a multimeter, A/C pressure gauge, refrigerant recovery equipment, and an OBD-II scanner for testing and clearing the code.

How much does it cost to fix code P0533 in a Chevrolet Silverado?

Costs vary depending on the issue, but replacing the pressure sensor typically costs $50-$150 for parts and $100-$300 for labor.

Can I fix code P0533 myself, or do I need a mechanic?

If you are comfortable working with A/C systems and electrical components, you can attempt a DIY repair. However, complex wiring issues or refrigerant handling may require a professional.

What happens if I ignore code P0533 in my Chevrolet Silverado?

Ignoring the code may lead to the A/C system shutting down completely, reduced comfort, or potential damage to system components due to high refrigerant pressure.