2020 Mitsubishi Outlander PHEV AC Isn't Working

Common Causes of AC Malfunctions in Your 2020 Mitsubishi Outlander PHEV 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 Mitsubishi Outlander PHEV 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 Mitsubishi Outlander PHEV?

To effectively diagnose an AC issue in your 2020 Mitsubishi Outlander PHEV, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the air filters, as clean filters are essential for optimal airflow; if they are dirty or clogged, replacing them can significantly improve AC performance. Next, verify the refrigerant levels in the system, since low refrigerant can lead to inadequate cooling. If the refrigerant is sufficient, examine the AC compressor for any signs of damage or wear, as a malfunctioning compressor can severely impact cooling efficiency. Additionally, ensure that the thermostat is functioning correctly, as it plays a crucial role in regulating the vehicle's internal temperature. It’s also important to check for any leaks in the AC system, as these can lead to refrigerant loss and diminished cooling. Finally, inspect the electrical components, including fuses and relays, to confirm they are operational. If you encounter persistent issues or feel uncertain about any step, consulting a professional mechanic or HVAC technician is advisable to ensure a thorough diagnosis and resolution of the problem. By following this structured diagnostic approach, you can effectively identify and address AC issues in your vehicle.

What are the common problems that could cause the AC to stop working in a 2020 Mitsubishi Outlander PHEV?

When troubleshooting the AC system in a 2020 Mitsubishi Outlander PHEV, it's essential to consider several common problems that could lead to a malfunction. One of the first things to check is the refrigerant level; low refrigerant can significantly hinder the system's ability to cool effectively. If the refrigerant is adequate, the next step is to inspect the compressor, as a faulty compressor can prevent the AC from functioning altogether. Additionally, electrical issues such as blown fuses or damaged wiring can disrupt the system's operation, so examining these components is crucial. Another potential issue is a clogged or dirty condenser, which can obstruct heat transfer and diminish cooling performance. Lastly, ensure that the cooling fans are operational, as inadequate airflow through the condenser can severely impact the AC's efficiency. By systematically checking these areas, DIYers can often identify the root cause of the AC problem and determine whether a simple fix is possible or if professional assistance is needed.

How urgent is it to repair the non-functioning AC in a 2020 Mitsubishi Outlander PHEV?

When it comes to repairing the non-functioning AC in your 2020 Mitsubishi Outlander PHEV, urgency cannot be overstated. A malfunctioning air conditioning system not only detracts from your driving comfort, especially during sweltering summer months, but it can also pose serious safety risks. For instance, an AC that fails to defog windows can impair visibility, increasing the likelihood of accidents. Moreover, delaying repairs can lead to more severe issues down the line, potentially resulting in costly repairs that could have been avoided with timely intervention. Additionally, maintaining a fully operational AC system is crucial for preserving your vehicle's resale value, as prospective buyers often consider the condition of the AC when making a purchase decision. Therefore, addressing AC issues as soon as they arise is essential for ensuring a safe, comfortable, and valuable driving experience.

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