2020 Subaru Outback AC Isn't Working

Common Causes of AC Malfunctions in Your 2020 Subaru Outback and How to Fix Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
37% chance it's the
Refrigerant Leak
0%
21% chance it's the
Climate Control Electrical Issue
0%
12% chance it's the
AC Compressor
0%
30% chance it's
Something else
The most common reasons a 2020 Subaru Outback AC isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.
  • Refrigerant Leak: A refrigerant leak can occur due to damaged hoses, seals, or connections, resulting in decreased cooling efficiency in the air conditioning system.
  • Climate Control Electrical Issue: A faulty climate control module or a blown fuse could be causing the electrical issues in the climate control system.
  • AC Compressor: A faulty AC compressor may be due to a lack of lubrication, electrical issues, or internal mechanical failure, resulting in inadequate cooling performance.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

What are the steps to diagnose the AC issue in a 2020 Subaru Outback?

To effectively diagnose an AC issue in a 2020 Subaru Outback, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the air filters, as dirty or clogged filters can significantly restrict airflow and diminish AC performance. Next, assess the refrigerant levels; low levels may indicate a leak, which can lead to inadequate cooling. Following this, examine the compressor, as it plays a vital role in the AC system's operation, and a malfunctioning compressor can severely impact performance. Additionally, test the thermostat to ensure it is functioning correctly, as a faulty thermostat can disrupt the entire system. Look for any visible signs of leaks, such as oily residue or refrigerant stains, which can help pinpoint issues within the system. Don’t overlook the electrical components; faulty wiring can also lead to AC problems, so a thorough inspection is essential. If these steps do not resolve the issue or if you feel uncertain about your findings, it is wise to consult a certified mechanic or AC specialist for a professional diagnosis. By following this structured approach, you can systematically identify and address AC issues in your Subaru Outback.

What are the common problems that could cause the AC to stop working in a 2020 Subaru Outback?

When diagnosing why the AC in a 2020 Subaru Outback has stopped working, it's essential to consider several common problems that could be at play. One of the most frequent issues is low refrigerant levels, which can severely limit the system's cooling capabilities. This often points to a leak that needs to be identified and repaired. Another significant factor could be a faulty compressor; if the compressor fails, it won't circulate refrigerant effectively, leading to warm air blowing from the vents. Additionally, electrical issues, such as blown fuses or damaged wiring, can prevent the AC from operating altogether. Clogged or leaking refrigerant lines can also disrupt the system's performance, as blockages restrict refrigerant flow and leaks diminish cooling efficiency. Lastly, damage to critical components like the condenser or evaporator can hinder the AC's ability to cool the air properly. If you encounter these issues, it's advisable to consult a qualified technician for a comprehensive diagnosis and repair to restore your AC system's functionality.

How urgent is it to repair the non-functioning AC in a 2020 Subaru Outback?

Repairing the non-functioning AC in a 2020 Subaru Outback is an urgent matter that should not be overlooked. The comfort of the vehicle's occupants is significantly compromised without a functioning AC, especially during hot weather, which can lead to discomfort and even health risks. Moreover, safety is a critical concern; a malfunctioning AC can cause windows to fog up, reducing visibility and increasing the likelihood of accidents. Additionally, neglecting AC repairs can adversely affect the vehicle's resale value, as potential buyers may be deterred by the prospect of costly repairs. Furthermore, a faulty AC system can place undue strain on other mechanical components, potentially leading to more extensive and expensive damage if not addressed promptly. Therefore, it is essential to prioritize AC repairs to ensure a safe, comfortable, and valuable driving experience.

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