AutoCodesGeneric – P2524

P2524 Code - A/C Request 'B' Circuit High

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
P2524 indicates A/C Request 'B' Circuit High.
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 4,315
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 17, 2019
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Code P2524 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 P2524 - A/C Request 'B' Circuit High - AutoCodes.com
P2524 Code - A/C Request 'B' Circuit High

What are the Possible Causes of the DTC P2524?

  • 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 P2524?

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 P2524 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 P2524 code?

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Need Help with the Code?

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Information for Specific Makes

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 P2524 Code

1. What does OBDII code P2524 mean?

Code P2524 indicates a high voltage condition in the A/C Request 'B' Circuit, suggesting an issue with the air conditioning system's electrical control.

2. What are common symptoms of code P2524?

Symptoms may include the A/C not functioning properly, the A/C compressor not engaging, or the check engine light being illuminated.

3. What causes code P2524?

Common causes include a faulty A/C request switch, damaged wiring or connectors in the A/C circuit, or a malfunctioning control module.

4. Can I drive with code P2524 active?

While the vehicle may still be drivable, the A/C system may not work, and ignoring the issue could lead to further electrical problems.

5. How do I diagnose code P2524?

Diagnosis involves checking the A/C request switch, inspecting the wiring and connectors for damage, and testing the circuit voltage levels.

6. What tools are needed to troubleshoot code P2524?

You’ll need an OBDII scanner, a multimeter for voltage testing, and possibly a wiring diagram for the A/C system.

7. How do I fix code P2524?

Repairs may include replacing a faulty A/C request switch, repairing damaged wires or connectors, or reprogramming or replacing the control module.

8. Can a blown fuse cause code P2524?

Yes, a blown fuse in the A/C circuit can disrupt the system and trigger this code.

9. How much does it cost to fix code P2524?

Repair costs vary but may range from $50 to $300 depending on whether it involves simple wiring repairs or component replacement.

10. Will clearing the code with a scanner fix P2524?

Clearing the code without addressing the underlying problem will likely result in the code returning. Proper diagnosis and repair are necessary.

Discuss the causes and fixes for P2524 OBDII Code

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