AutoCodes – Dodge – P2520 Dodge

P2520 Dodge Code - A/C Request 'A' Circuit Low

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: P2520 Dodge indicates A/C Request 'A' Circuit Low.
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 3,434

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 P2520 Dodge 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 P2520 Dodge - A/C Request 'A' Circuit Low - AutoCodes.com — P2520 Dodge Code - A/C Request 'A' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2520 Dodge?

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 P2520 Dodge?

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 P2520 Dodge 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.

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Need more information on how to fix the P2520 Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P2520 Dodge Code

1. What are the common symptoms of OBDII code P2520 (A/C Request 'A' Circuit Low) in a Dodge vehicle?

- Common symptoms include the air conditioning system not functioning properly, reduced cooling performance, and the A/C compressor not engaging.

2. What are the possible causes of OBDII code P2520 in a Dodge vehicle?

- The code P2520 can be triggered by issues such as a faulty A/C pressure sensor, damaged wiring or connectors in the A/C system circuit, or a malfunctioning A/C control module.

3. How can I diagnose the cause of OBDII code P2520 in my Dodge vehicle?

- To diagnose the cause of code P2520, you may need to perform a thorough visual inspection of the A/C system components, check the A/C pressure sensor for proper operation, and use an OBDII scanner to retrieve additional diagnostic trouble codes.

4. Is it safe to continue driving with OBDII code P2520 present in my Dodge vehicle?

- It is not recommended to drive with code P2520 present, as it can lead to further damage to the A/C system and potentially affect the overall performance of your vehicle's cooling system.

5. Can I reset OBDII code P2520 in my Dodge vehicle by disconnecting the battery?

- While disconnecting the battery may temporarily clear the code, it is not a recommended method for resolving the underlying issue causing code P2520. It is best to diagnose and repair the root cause of the code.

6. What are some repair tips for fixing OBDII code P2520 in a Dodge vehicle?

- Repair tips may include checking and repairing any damaged wiring or connectors in the A/C system circuit, replacing a faulty A/C pressure sensor, and ensuring proper communication between the A/C control module and other components.

7. Can a DIY enthusiast fix OBDII code P2520 in a Dodge vehicle, or is it best left to professionals?

- Depending on your level of automotive expertise, you may be able to address code P2520 by following repair guides and using the necessary tools. However, complex electrical issues may require professional assistance.

8. How much does it typically cost to repair OBDII code P2520 in a Dodge vehicle?

- The cost of repairing code P2520 can vary depending on the root cause of the issue, the need for replacement parts, and whether you choose to address the problem yourself or seek professional help. Costs may range from a few hundred dollars to over a thousand dollars.

9. How long does it take to repair OBDII code P2520 in a Dodge vehicle?

- The repair time for code P2520 can vary based on the complexity of the issue and the availability of parts. Simple fixes may take a few hours, while more intricate repairs could extend the process to a day or more.

10. Can extreme weather conditions or driving habits contribute to triggering OBDII code P2520 in a Dodge vehicle?

- Extreme weather conditions, such as high temperatures, or frequent use of the A/C system in demanding situations, may potentially contribute to triggering code P2520 by putting additional stress on the A/C components. Regular maintenance and proper usage can help prevent such issues.