AutoCodes – Dodge – P2523 Dodge

P2523 Dodge Code - A/C Request 'B' 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: P2523 Dodge indicates A/C Request 'B' 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 2,610

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 P2523 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 P2523 Dodge - A/C Request 'B' Circuit Low - AutoCodes.com — P2523 Dodge Code - A/C Request 'B' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2523 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 P2523 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 P2523 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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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 P2523 Dodge Code

What does the OBDII code P2523 mean on a Dodge?

P2523 is a diagnostic trouble code (DTC) for "A/C Request 'B' Circuit Low." This indicates that the vehicle's engine control module (ECM) has detected a low voltage signal coming from the air conditioning (A/C) request 'B' circuit.

What symptoms might I notice if my Dodge has the P2523 code?

Symptoms of the P2523 code may include the air conditioning system not functioning properly or not turning on at all. You might also notice the A/C button not responding or the A/C indicator light behaving erratically.

What causes the P2523 code in a Dodge vehicle?

The P2523 code can be caused by several issues, including a faulty A/C control switch, damaged or corroded wiring in the A/C request circuit, or a bad connection. Less commonly, the problem could stem from a defective ECM.

How can I fix the P2523 code on my Dodge?

To fix the P2523 code, start by inspecting the wiring and connectors related to the A/C control circuit for any signs of damage or corrosion. If the wiring and connectors are intact, consider testing or replacing the A/C control switch. If these steps donâ€™t resolve the issue, it may be necessary to consult a professional mechanic or consider the possibility of an ECM fault.

Is it safe to drive my Dodge with the P2523 code?

While driving with the P2523 code is generally safe in terms of vehicle operation, you will likely experience discomfort due to the lack of air conditioning. However, it's best to address the issue promptly, especially in hot weather conditions.

Can ignoring the P2523 code lead to other problems in my Dodge?

Ignoring the P2523 code might not directly lead to other engine problems, but continuous operation without proper A/C functioning can be uncomfortable and could potentially mask other underlying issues related to the vehicleâ€™s electrical system.

What tools are needed to diagnose the P2523 code on a Dodge?

Diagnosing the P2523 code typically requires a digital multimeter to test voltages and resistances in the A/C request circuit, and a scan tool to read the code and monitor live data from the ECM. A wiring diagram for the A/C system can also be incredibly helpful.

How much does it typically cost to repair the P2523 code in a Dodge?

The cost to repair the P2523 code can vary widely depending on the exact cause and the labor rates in your area. For instance, replacing a faulty A/C control switch might cost between $50 to $200 for parts and labor, while more complex electrical issues or ECM replacement can significantly increase the costs.