AutoCodes – Chevrolet – P0533 2015 Chevrolet Silverado

P0533 2015 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 2015 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 516

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 2015 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 2015 Chevrolet Silverado - A/C Refrigerant Pressure Sensor Circuit High Input - AutoCodes.com — P0533 2015 Chevrolet Silverado Code - A/C Refrigerant Pressure Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0533 2015 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 2015 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 2015 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 2015 Chevrolet Silverado code?

Need more information on how to fix the P0533 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0533 2015 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 2015 Chevrolet Silverado Code

1. What does the OBDII code P0533 mean for a 2015 Chevrolet Silverado?

P0533 indicates that the A/C Refrigerant Pressure Sensor Circuit has detected a pressure reading that is too high, signaling a potential issue with the air conditioning system.

2. What are the common symptoms of code P0533 in a 2015 Chevrolet Silverado?

Common symptoms include the A/C not functioning properly, warm air blowing from the vents, and the check engine light or A/C warning light illuminating.

3. What causes the P0533 code in a 2015 Chevrolet Silverado?

Potential causes include a faulty A/C refrigerant pressure sensor, excessive refrigerant in the system, electrical issues like damaged wiring or poor connections, or problems with the A/C control module.

4. Can I still drive my 2015 Chevrolet Silverado with code P0533 active?

Yes, you can drive the vehicle, but the A/C system may not function correctly, and ignoring the issue could lead to further damage to the air conditioning system.

5. How do I diagnose the P0533 code on a 2015 Chevrolet Silverado?

Diagnosis involves checking the refrigerant pressure sensor, inspecting the sensor's wiring and connectors for damage, and verifying the system's refrigerant level.

6. How can I fix the P0533 code on my 2015 Chevrolet Silverado?

Repairs may include replacing the refrigerant pressure sensor, repairing or replacing damaged wiring, properly evacuating and recharging the A/C system, or addressing A/C control module issues.

7. How much does it cost to fix code P0533 on a 2015 Chevrolet Silverado?

Repair costs can vary, but replacing an A/C refrigerant pressure sensor typically costs $100â€“$300, depending on parts and labor.

8. Can overcharging the A/C system cause code P0533?

Yes, overcharging the A/C system with too much refrigerant can lead to excessively high pressure, triggering the P0533 code.

9. Do I need professional help to fix code P0533 on my 2015 Chevrolet Silverado?

While some basic checks can be done by DIYers, diagnosing and repairing A/C system issues often requires specialized tools and expertise, so professional help may be necessary.

10. Will clearing the code with a scanner fix the P0533 issue?

Clearing the code may temporarily turn off the check engine light, but if the underlying issue is not resolved, the P0533 code will return.