AutoCodes – Subaru – B14A4 Subaru

B14A4 Subaru Code - Refrigerant Pressure Sensor Circuit Short Circuit

Quick Answer

The Air Condition (A/C) Control Module monitors the Refrigerant Pressure Sensor. Common causes include Faulty Refrigerant Pressure Sensor, Refrigerant Pressure Sensor harness is open or shorted, Refrigerant Pressure Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B14A4 Subaru indicates Refrigerant Pressure Sensor Circuit Short Circuit.
Common causes
Common causes include Faulty Refrigerant Pressure Sensor, Refrigerant Pressure Sensor harness is open or shorted, Refrigerant Pressure Sensor circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 2,209
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 15, 2019
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Code B14A4 Subaru Description

The Air Condition (A/C) Control Module monitors the Refrigerant Pressure Sensor. The A/C Control Module sets the OBDII code when the Refrigerant Pressure Sensor is not to factory specifications.
OBDII Code B14A4 Subaru - Refrigerant Pressure Sensor Circuit Short Circuit - AutoCodes.com
B14A4 Subaru Code - Refrigerant Pressure Sensor Circuit Short Circuit

What are the Possible Causes of the DTC B14A4 Subaru?

  • Faulty Refrigerant Pressure Sensor
  • Refrigerant Pressure Sensor harness is open or shorted
  • Refrigerant Pressure Sensor circuit poor electrical connection
  • Faulty Air Condition (A/C) Control Module

How to Fix the DTC B14A4 Subaru?

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 B14A4 Subaru 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 B14A4 Subaru Code

1. What are the common symptoms of OBDII code B14A4 in a Subaru related to the Refrigerant Pressure Sensor Circuit Short Circuit?

The common symptoms include issues with the air conditioning system, such as erratic cooling or heating, failure of the air conditioning to turn on, or inconsistent temperature control.

2. What are the potential causes of the OBDII code B14A4 in a Subaru indicating a Refrigerant Pressure Sensor Circuit Short Circuit?

Possible causes include a faulty refrigerant pressure sensor, damaged wiring or connectors in the circuit, low refrigerant levels, or a malfunctioning HVAC control module.

3. How can I diagnose the OBDII code B14A4 in my Subaru related to the Refrigerant Pressure Sensor Circuit Short Circuit?

Diagnosis involves using an OBDII scanner to retrieve the specific fault code, checking the wiring and connectors for any visible damage, testing the refrigerant pressure sensor, and verifying the refrigerant levels in the system.

4. Is it safe to continue driving my Subaru with the OBDII code B14A4 indicating a Refrigerant Pressure Sensor Circuit Short Circuit?

It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the air conditioning system and potentially affect the overall performance of the vehicle.

5. How can I repair the OBDII code B14A4 in my Subaru showing a Refrigerant Pressure Sensor Circuit Short Circuit?

Repairing the issue may involve replacing the faulty refrigerant pressure sensor, repairing any damaged wiring or connectors, refilling the refrigerant to the correct levels, or resetting the HVAC control module.

6. Can I reset the OBDII code B14A4 in my Subaru related to the Refrigerant Pressure Sensor Circuit Short Circuit on my own?

You can attempt to clear the code using an OBDII scanner, but it is recommended to address the underlying issue first to prevent the code from reappearing.

7. How much does it typically cost to repair the OBDII code B14A4 indicating a Refrigerant Pressure Sensor Circuit Short Circuit in a Subaru?

The cost of repair can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor, excluding any additional diagnosis or testing fees.

8. Can a DIY enthusiast with basic automotive knowledge fix the OBDII code B14A4 in a Subaru related to the Refrigerant Pressure Sensor Circuit Short Circuit?

Depending on the exact cause of the code, a DIY enthusiast may be able to fix the issue by replacing the refrigerant pressure sensor or repairing simple wiring problems. However, more complex issues may require professional assistance.

9. Will the OBDII code B14A4 in my Subaru reset on its own after the issue is fixed?

After repairing the underlying cause of the code, you may need to use an OBDII scanner to clear the code manually. In some cases, the code may reset on its own after a certain number of successful drive cycles.

10. How can I prevent the OBDII code B14A4 related to the Refrigerant Pressure Sensor Circuit Short Circuit from occurring in my Subaru in the future?

Regular maintenance of the air conditioning system, checking refrigerant levels, and addressing any issues promptly can help prevent this code from reoccurring in the future.

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