AutoCodes – Dodge – P256F Dodge

P256F Dodge Code - A/C Request 'B' Circuit Range/Performance

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: P256F Dodge indicates A/C Request 'B' Circuit Range/Performance.
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 1,111

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 18, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P256F 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 P256F Dodge - A/C Request 'B' Circuit Range/Performance - AutoCodes.com — P256F Dodge Code - A/C Request 'B' Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P256F 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 P256F 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 P256F 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 P256F Dodge Code

1. What are the common symptoms of OBDII code P256F in a Dodge related to the A/C Request 'B' Circuit Range/Performance issue?

- Common symptoms include poor air conditioning performance, failure of the A/C system to engage, and possible illumination of the Check Engine Light.

2. What are the possible causes of the OBDII code P256F in a Dodge for the A/C Request 'B' Circuit Range/Performance problem?

- Potential causes may include a faulty A/C compressor, issues with the A/C clutch, wiring or connector problems, or a malfunctioning A/C pressure sensor.

3. How can I diagnose the A/C Request 'B' Circuit Range/Performance issue related to code P256F in my Dodge?

- Diagnosis typically involves checking the A/C system components, inspecting wiring and connectors for damage, and testing the A/C pressure sensor for proper functionality.

4. Can I continue driving my Dodge with the OBDII code P256F related to the A/C Request 'B' Circuit Range/Performance problem?

- It is not recommended to drive your vehicle with this issue as it can lead to poor cooling performance and potential damage to the A/C system components.

5. What are some repair tips for resolving the OBDII code P256F in a Dodge associated with the A/C Request 'B' Circuit Range/Performance fault?

- Repair tips may include checking and replacing the A/C compressor, addressing any wiring or connector issues, and recalibrating the A/C system as needed.

6. Is it necessary to reset the OBDII code P256F after fixing the A/C Request 'B' Circuit Range/Performance issue in my Dodge?

- Yes, it is recommended to reset the trouble code using an OBDII scanner after resolving the A/C system problem to clear the Check Engine Light and ensure proper functioning.

7. Can a DIY enthusiast fix the OBDII code P256F related to the A/C Request 'B' Circuit Range/Performance issue in a Dodge?

- Depending on the specific issue, DIY enthusiasts with automotive repair experience may be able to address the problem, but complex A/C system repairs may require professional assistance.

8. How much does it typically cost to repair the A/C Request 'B' Circuit Range/Performance problem causing the OBDII code P256F in a Dodge?

- Repair costs can vary widely depending on the exact cause of the issue, but expenses may involve parts replacement, labor charges, and potential diagnostic fees.

9. Are there any preventive maintenance steps to avoid encountering the OBDII code P256F due to the A/C Request 'B' Circuit Range/Performance issue in a Dodge?

- Regularly servicing the A/C system, checking for any signs of wear or damage, and addressing A/C issues promptly can help prevent the occurrence of this trouble code.

10. How urgent is it to address the OBDII code P256F linked to the A/C Request 'B' Circuit Range/Performance issue in a Dodge?

- It is recommended to address the issue promptly to ensure proper functioning of the A/C system and prevent potential damage to other components, especially in hot weather conditions.