AutoCodes – Chevrolet – P2519 Chevrolet

P2519 Chevrolet Code - A/C Request 'A' Circuit

Quick Answer

The Powertrain Control Module (PCM) monitors the refrigerant pressure through the Air Condition (A/C) Pressure Sensor. Common causes include Low refrigerant, Too much refrigerant, Faulty Low Side 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: P2519 Chevrolet indicates A/C Request 'A' Circuit.
Common causes: Common causes include Low refrigerant, Too much refrigerant, Faulty Low Side 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 2,845

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 Jan 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2519 Chevrolet Description

The Powertrain Control Module (PCM) monitors the refrigerant pressure through the Air Condition (A/C) Pressure Sensor. The PCM supplies a 5V reference and a low reference to the sensor. Changes in the A/C refrigerant pressure causes the sensor signal to the PCM to vary. When the pressure is high, the signal is high. When the pressure is low, the signal is low. The PCM sets the OBII code when the signal from the sensor is out of factory specifications.

OBDII Code P2519 Chevrolet - A/C Request 'A' Circuit - AutoCodes.com — P2519 Chevrolet Code - A/C Request 'A' Circuit

What does this mean?

What are the Possible Causes of the DTC P2519 Chevrolet?

Low refrigerant
Too much refrigerant
Faulty Low Side Pressure Sensor
Low Side Pressure Sensor harness is open or shorted
Low Side Pressure Sensor circuit poor electrical connection

How to Fix the DTC P2519 Chevrolet?

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 P2519 Chevrolet 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 P2519 Chevrolet code?

Need more information on how to fix the P2519 Chevrolet code? Get Access to Factory Service Manuals

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Get the P2519 Chevrolet 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 P2519 Chevrolet Code

1. What are the common symptoms of OBDII code P2519 in a Chevrolet related to the A/C Request 'A' Circuit?

- Common symptoms include the air conditioning system not working properly, the A/C compressor not engaging, and a lack of cool air coming from the vents.

2. What are the potential causes of OBDII code P2519 in a Chevrolet indicating an issue with the A/C Request 'A' Circuit?

- Possible causes may include a faulty A/C request switch, a malfunctioning A/C control module, wiring issues, or a problem with the A/C compressor itself.

3. How can I diagnose the A/C Request 'A' Circuit issue causing OBDII code P2519 in my Chevrolet?

- Diagnosing this issue typically involves checking the A/C request switch for proper operation, inspecting the wiring for any damage or loose connections, and testing the A/C control module for faults.

4. Can a bad A/C Request 'A' Circuit affect the overall performance of my Chevrolet's air conditioning system?

- Yes, a malfunctioning A/C Request 'A' Circuit can prevent the A/C compressor from engaging, leading to poor cooling performance and discomfort in the cabin.

5. Are there any DIY repair tips for fixing OBDII code P2519 related to the A/C Request 'A' Circuit in a Chevrolet?

- DIY repair tips include checking and replacing any blown fuses related to the A/C system, ensuring all wiring connections are secure, and testing the A/C request switch for proper functionality.

6. Is it safe to continue driving my Chevrolet with OBDII code P2519 indicating an issue with the A/C Request 'A' Circuit?

- While it may be safe to drive, it is recommended to address the issue promptly to avoid further damage to the A/C system and ensure optimal comfort while driving.

7. Can resetting the OBDII system clear the P2519 code related to the A/C Request 'A' Circuit in a Chevrolet?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue with the A/C Request 'A' Circuit is not fixed, the code is likely to reappear.

8. How much does it typically cost to repair OBDII code P2519 in a Chevrolet caused by the A/C Request 'A' Circuit problem?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Is it necessary to visit a dealership or can a local mechanic handle the repair for OBDII code P2519 related to the A/C Request 'A' Circuit in a Chevrolet?

- A local mechanic with experience in automotive electrical systems should be able to diagnose and repair the A/C Request 'A' Circuit issue causing OBDII code P2519 in a Chevrolet.

10. How can I prevent OBDII code P2519 from appearing again in my Chevrolet after fixing the A/C Request 'A' Circuit problem?

- Regular maintenance of the A/C system, checking for any wiring issues, and ensuring the A/C request switch is functioning properly can help prevent the recurrence of OBDII code P2519.