2019 Ram ProMaster 1500 AC Isn't Working

Common Causes of AC Failure in Your 2019 Ram ProMaster 1500 and How to Fix Them

Find Repair Location
Reviewed by
Bo Fader
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 2019 Ram ProMaster 1500 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 on a 2019 Ram ProMaster 1500?

When your 2019 Ram ProMaster 1500's AC isn't functioning, start by checking the thermostat settings to confirm they are correctly adjusted to a cool temperature, as this is a common oversight. Next, inspect the air filters; if they are dirty or clogged, replacing them can significantly improve airflow and AC performance. It's also essential to verify the refrigerant levels using a pressure gauge, as low levels can lead to inadequate cooling. If the refrigerant is sufficient, examine the AC compressor to ensure it engages when the AC is activated; a malfunctioning compressor may require further attention. Additionally, look for any signs of leaks around the AC system, as these can lead to refrigerant loss. Don't forget to check the electrical connections for any corrosion or looseness, as faulty connections can disrupt the AC's operation. Finally, test the blower motor to ensure it is circulating air properly; a malfunction here can severely impact airflow. By systematically addressing these areas, you can effectively diagnose and potentially resolve the AC issues in your vehicle.

What are the common problems that could cause the AC to stop working in a 2019 Ram ProMaster 1500?

When troubleshooting the air conditioning system in a 2019 Ram ProMaster 1500, it's essential to understand the common problems that may lead to a malfunction. One of the primary culprits is low refrigerant levels, which can significantly hinder the system's cooling efficiency. If the refrigerant is insufficient, it may indicate a leak or improper charging. Another frequent issue is a faulty compressor; if the compressor fails, it won't circulate the refrigerant effectively, resulting in a lack of cool air. Additionally, electrical problems, such as blown fuses or damaged wiring, can disrupt the AC's operation, preventing it from functioning altogether. Clogged or leaking refrigerant lines can also impede the system's performance, as blockages restrict flow and leaks allow refrigerant to escape. Furthermore, defects in the condenser or evaporator can lead to inadequate cooling, while a malfunctioning blower motor may result in poor airflow from the vents. By identifying these common issues, DIY enthusiasts can better diagnose and address AC problems in their ProMaster, although consulting a professional mechanic is recommended for complex repairs.

How urgent is it to repair the non-functioning AC in a 2019 Ram ProMaster 1500?

When faced with a non-functioning AC in your 2019 Ram ProMaster 1500, the urgency of repair cannot be overstated. In hot climates, a malfunctioning AC can significantly diminish your comfort during commutes, making it essential to address the issue promptly. Moreover, the health and safety of both passengers and pets are at stake; extreme heat can lead to heat-related illnesses, making a functioning AC not just a luxury but a necessity. Additionally, maintaining a well-functioning AC system is crucial for preserving the vehicle's resale value; potential buyers are likely to be deterred by a vehicle that lacks essential features like air conditioning. Lastly, delaying repairs can lead to more severe damage within the AC system, resulting in costly repairs that could have been avoided. Therefore, it is advisable to prioritize AC repairs to ensure a safe, comfortable, and valuable driving experience.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.