2021 Nissan Frontier: A/C Refrigerant & Oil

Quick answer

• Refrigerant type: R-1234yf
• Full system charge: 17.6 oz (500g)
• PAG oil type: PAG 46
• PAG oil amount: 4.1 oz (120mL)
• Low-side service port location: Near the firewall, on the passenger side of the engine bay
• High-side service port location: Near the radiator, on the driver's side of the engine bay

Why R-1234yf matters

The 2021 Nissan Frontier uses R-1234yf refrigerant, which has a lower global warming potential than the R-134a used in older vehicles. This change was made to comply with EPA regulations. However, R-1234yf is more expensive than R-134a and requires a special recovery machine for service. It is also mildly flammable, so it is important to follow all safety precautions when working with it.

Recharge procedure

Recharging the A/C system on a 2021 Nissan Frontier is not a simple DIY project. The system must be evacuated of all refrigerant before it can be recharged. This requires a special vacuum pump. The system must then be recharged with the correct amount of refrigerant by weight, not by pressure. Using the wrong amount of refrigerant can damage the A/C system.

Common A/C problems for this vehicle

Some common A/C problems for the 2021 Nissan Frontier include:

• Compressor failures: The A/C compressor is a common failure point on all vehicles, and the Frontier is no exception. The compressor can fail due to a variety of factors, including age, wear and tear, and lack of maintenance.
• Condenser issues: The A/C condenser is located in front of the radiator and is responsible for cooling the refrigerant. The condenser can be damaged by road debris, which can cause leaks. The condenser can also become clogged with dirt and debris, which can reduce its efficiency.
• Evaporator leaks: The A/C evaporator is located inside the passenger compartment and is responsible for cooling the air that blows into the cabin. The evaporator can develop leaks over time, which can cause the A/C system to lose its charge.

When to call a pro

If you are not comfortable working on your own A/C system, it is best to call a professional. A qualified technician will have the tools and experience to properly diagnose and repair any A/C problems you may be having.

Disclaimer: It is important to be EPA 609 certified to work on A/C systems. This certification ensures that you have the knowledge and training to safely handle refrigerants.

Find a certified A/C shop on Repairius.