AutoCodes – Ford – P2520 Ford

P2520 Ford 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 Ford 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 1,723

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

What does this mean?

What are the Possible Causes of the DTC P2520 Ford?

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 Ford?

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 Ford 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 P2520 Ford code?

Need more information on how to fix the P2520 Ford 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 Ford Code

1. What are common symptoms of the OBDII code P2520 in a Ford related to the A/C Request 'A' Circuit Low?

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

2. What could cause the OBDII code P2520 in a Ford indicating an A/C Request 'A' Circuit Low?

- Possible causes include a faulty A/C compressor clutch, damaged wiring or connectors in the A/C system, or a problem with the A/C control module.

3. How can I diagnose the OBDII code P2520 in a Ford for the A/C Request 'A' Circuit Low?

- Diagnosis involves using an OBDII scanner to retrieve the trouble code, inspecting the A/C compressor and related components for damage, and testing the circuit for proper voltage and continuity.

4. Is it safe to continue driving with the OBDII code P2520 in a Ford related to the A/C Request 'A' Circuit Low?

- It is generally safe to drive with this code, but it is recommended to have the issue diagnosed and repaired as soon as possible to avoid potential damage to the A/C system.

5. Can I repair the OBDII code P2520 in a Ford indicating an A/C Request 'A' Circuit Low myself?

- Depending on your level of automotive experience, you may be able to repair this issue yourself by replacing the faulty A/C compressor clutch, repairing damaged wiring, or addressing any other identified issues.

6. Are there any simple tips for fixing the OBDII code P2520 in a Ford related to the A/C Request 'A' Circuit Low?

- Some simple tips include checking and cleaning the A/C system's electrical connectors, ensuring proper refrigerant levels, and inspecting the A/C relay for any signs of damage.

7. How much does it typically cost to repair the OBDII code P2520 in a Ford for the A/C Request 'A' Circuit Low?

- Repair costs can vary depending on the specific issue causing the code, but they may range from $100 to $500 or more, including parts and labor.

8. Can a faulty A/C Request 'A' Circuit Low code in a Ford lead to other problems if left unrepaired?

- If left unrepaired, this issue can lead to further damage to the A/C system components, reduced cooling efficiency, and potential strain on the vehicle's engine due to increased load on the compressor.

9. How long does it typically take to repair the OBDII code P2520 in a Ford related to the A/C Request 'A' Circuit Low?

- Repair times can vary depending on the exact cause of the issue, but it may take anywhere from 1 to 3 hours for a professional technician to diagnose and fix the problem.

10. Can resetting the OBDII system clear the P2520 code in a Ford related to the A/C Request 'A' Circuit Low?

- Resetting the OBDII system may temporarily clear the code, but it is important to address the underlying issue causing the code to prevent it from returning.