2016 Subaru Impreza Ac Isn't Working

Common Causes of AC Failure in Your 2016 Subaru Impreza and How to Restore Comfort

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Reviewed by
Andrew Hajjar
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 2016 Subaru Impreza 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 initial diagnostic steps to take when the AC isn't working in a 2016 Subaru Impreza?

When troubleshooting the air conditioning system in a 2016 Subaru Impreza, it's essential to adopt a systematic diagnostic approach that begins with the simplest solutions before progressing to more complex issues. Start by checking the cabin air filter, as a clogged filter can significantly hinder airflow and reduce AC efficiency. If the filter is clean, verify the operation of the AC compressor; ensure it engages when the system is activated. If the compressor fails to turn on, inspect for refrigerant leaks, which are often found around the o-rings, and check the AC fuse and relay for any electrical faults. If these components are functioning correctly, examine the compressor clutch to ensure it engages properly, as a malfunction here can prevent the system from cooling effectively. Additionally, assess the refrigerant levels using a manifold gauge set; low levels can inhibit compressor operation, while overcharging can lead to further complications. Don't overlook the condenser, as blockages or damage can disrupt refrigerant cooling. Finally, observe the system's behavior during operation, as changes in temperature or cycling patterns can provide valuable clues to the underlying issue. By following this structured approach, you can effectively diagnose and address common AC problems in your Subaru Impreza, ensuring a more comfortable driving experience.

What are the common problems that could cause the AC to stop working in a 2016 Subaru Impreza?

When troubleshooting the air conditioning system in a 2016 Subaru Impreza, it's essential to understand the common problems that can lead to AC failure. One prevalent issue is the AC compressor clutch, which may fail to engage or disengage properly, resulting in excessive pressure and potential compressor damage. Additionally, a gap that develops between the compressor clutch and its pulley can disrupt functionality, making it crucial to maintain the specified gap of 0.3 to 0.6 millimeters. Refrigerant leaks are another frequent culprit, often occurring around the high and low side lines; checking and replacing O-rings or seals can help restore the system's integrity. Furthermore, faulty fuses or relays can prevent the compressor from receiving power, so inspecting these components is vital. Blockages in the condenser, evaporator core, or cabin air filters can also hinder airflow, necessitating regular cleaning to ensure optimal performance. Lastly, issues related to the evaporator, such as leaks or blockages, can significantly impact AC functionality, and addressing these concerns can lead to a more effective cooling system. By systematically examining these areas, you can effectively diagnose and resolve AC issues in your Subaru Impreza.

How urgent is it to repair the non-functioning AC in a 2016 Subaru Impreza?

When considering the urgency of repairing a non-functioning AC in a 2016 Subaru Impreza, it's essential to recognize that while immediate safety may not be compromised, the comfort and functionality of your vehicle are at stake. A malfunctioning AC can lead to an uncomfortably hot cabin, particularly during the sweltering summer months, making driving less enjoyable and potentially distracting. Moreover, if the issue stems from a refrigerant leak or compressor failure, delaying repairs can exacerbate the problem, leading to further damage and more expensive fixes down the line. For instance, a refrigerant leak can dry out seals, causing additional components to fail. Additionally, Subaru models from this era are known for specific compressor issues; ignoring early warning signs like unusual noises or increased engine strain can result in complete compressor failure. Furthermore, an overcharged AC system can not only reduce cooling efficiency but also risk damaging the compressor. While the repair may not be critical for immediate safety, addressing the AC issue promptly is advisable to maintain comfort, prevent further damage, and ensure your vehicle operates efficiently.

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