2019 Nissan Titan: A/C Refrigerant and Oil Specifications

Quick answer

• Refrigerant type: R-1234yf
• Full system charge: 24 oz (680g)
• PAG oil type: PAG 46
• PAG oil amount: 4.5 oz (133 mL)
• Low-side service port location: Near the firewall, on the passenger side of the engine bay
• High-side service port location: In front of the radiator, on the driver's side

Why R-1234yf matters

The 2019 Nissan Titan uses R-1234yf refrigerant, which is more environmentally friendly than the older R-134a. However, it's also more expensive and requires special equipment for service. R-1234yf has a much lower global warming potential (GWP) than R-134a, which is why the EPA has mandated its use in newer vehicles. This means you can't just top off your system with a can of refrigerant from the auto parts store. You'll need a special R-1234yf-specific machine to recover any remaining refrigerant, evacuate the system, and recharge it to the proper specification.

Recharge procedure

A proper A/C recharge is not a simple top-off. The correct procedure is to first recover any remaining refrigerant from the system, then evacuate the system to remove any air and moisture. Once the system is evacuated, it should be recharged with the precise weight of refrigerant specified by the manufacturer. Do not use pressure gauges to determine the fill level, as this can be inaccurate and lead to overcharging, which can damage the A/C system. For the 2019 Nissan Titan, that's 24 oz (680g) of R-1234yf.

Common A/C problems for this vehicle

While the 2019 Nissan Titan is a reliable truck, some common A/C problems can occur. These include:

• Compressor failure: The A/C compressor is the heart of the system, and it can fail over time. Symptoms of a failing compressor include a lack of cold air, strange noises from the engine bay, and a visible leak from the compressor itself.
• Condenser issues: The A/C condenser is located in front of the radiator, and it can be damaged by road debris. A damaged condenser will leak refrigerant and cause the A/C system to fail.
• Evaporator leaks: The A/C evaporator is located inside the dashboard, and it can develop leaks over time. Symptoms of an evaporator leak include a musty smell from the vents and a lack of cold air.

When to call a pro

If you're not a certified A/C technician, it's best to leave A/C repairs to the professionals. A/C systems are complex, and they can be dangerous to work on if you don't know what you're doing. A certified technician will have the proper equipment to diagnose and repair your A/C system safely and effectively.

Safety disclaimer: It is illegal to release refrigerant into the atmosphere. The EPA requires that all technicians who work on A/C systems be certified in refrigerant recovery and recycling. If you're not a certified technician, do not attempt to repair your A/C system yourself.

Find a certified A/C shop on Repairius.