AutoCodes – Chevrolet – P0533 2014 Chevrolet Silverado

P0533 2014 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 2014 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 1,001

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 2014 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 2014 Chevrolet Silverado - A/C Refrigerant Pressure Sensor Circuit High Input - AutoCodes.com — P0533 2014 Chevrolet Silverado Code - A/C Refrigerant Pressure Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0533 2014 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 2014 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 2014 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 2014 Chevrolet Silverado code?

Need more information on how to fix the P0533 2014 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 2014 Chevrolet Silverado Code

What does code P0533 mean for a 2014 Chevrolet Silverado?

Code P0533 indicates that the A/C refrigerant pressure sensor is detecting a pressure level that is higher than the acceptable range.

What are the symptoms of code P0533?

Symptoms may include the A/C system not working properly, reduced cooling performance, or the A/C compressor failing to engage.

What causes the P0533 code to appear?

Common causes include a faulty A/C refrigerant pressure sensor, excessive refrigerant pressure, wiring issues, or a malfunctioning A/C compressor.

Can overcharged refrigerant cause a P0533 code?

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

How do you diagnose code P0533?

Diagnosis typically involves checking the refrigerant pressure levels, inspecting the A/C refrigerant pressure sensor, and examining the wiring and connectors for damage or corrosion.

Can a faulty refrigerant pressure sensor trigger P0533?

Yes, a malfunctioning refrigerant pressure sensor can provide incorrect readings and cause the P0533 code.

Is it safe to drive with code P0533?

While the vehicle may still be drivable, the A/C system may not function properly, and prolonged use could cause further damage to the system.

How do you fix the P0533 code?

Repairs may involve replacing the A/C refrigerant pressure sensor, fixing damaged wiring, or adjusting the refrigerant levels in the system.

How much does it cost to repair code P0533?

Costs vary depending on the specific issue but may range from $100 to $300 for parts and labor, depending on whether the sensor, wiring, or refrigerant levels need attention.

Can clearing the P0533 code fix the problem?

Clearing the code may temporarily remove it, but the underlying issue must be resolved to prevent the code from reappearing.