Land Rover Discovery 3 L319 Mass Air Flow Meter Sensor 2.7 V6 Diesel PHF500100

Land Rover Discovery 3 L319 Mass Air Flow Meter Sensor 2.7 V6 Diesel is an original component from the Air and fuel intake sensors group, designed for the 2.7 V6 diesel engine. It ensures precise measurement of the intake air volume, which translates into stable engine operation, correct fuel dosing, and predictable throttle response.

Specifications and technical data

• SKU: PHF500100-1
• Mark: Land Rover
• Condition: Used
• OEM Part Number: PHF500100
• Substitutable numbers: PHF500100, 5WK97010, 5H2Z12B579CA, 5H2Z-12B579-CA
• Fuel type: Diesel
• Category: Air Intake & Fuel Sensors

Purpose and function in the intake system

The air flow meter in the 2.7 V6 diesel engine is responsible for the continuous measurement of the air mass drawn through the intake system. Based on this data, the engine control unit selects the fuel dose, adjusts the operation of the injection system, and monitors exhaust emissions. A functional sensor in this location is crucial for:

• maintaining smooth engine operation across the entire RPM range,
• proper cold and warm starts,
• reducing smoke and power drops,
• stable operation of the turbocharger and exhaust emission control filters. For Land Rover diesel units, the correct operation of the air flow meter is particularly important, as the diesel engine is highly sensitive to air mass measurement errors.

Benefits of using an original sensor

The original air flow meter from the Air and fuel intake sensors group is designed for the specific operating parameters of the 2.7 V6 Diesel engine. As a result, the controller receives a signal with the appropriate characteristics, which allows for maintaining factory injection maps and prevents the need for additional tuning. In practice, this means:

• better measurement repeatability compared to random replacements,
• lower risk of error codes appearing in the engine control unit,
• more predictable vehicle behavior under load,
• easier diagnostics in case of other intake or fuel system faults. In the case of diesel engines, using a component with the correct electrical and flow characteristics helps maintain the proper air-fuel ratio, which affects engine refinement and component wear.

Integration with the fuel system and diagnostics

The air flow meter works in conjunction with the injection system, temperature sensors, boost pressure sensors, and the engine control unit. An incorrect signal from this component can result in symptoms similar to injector or fuel pump failure; therefore, when diagnosing a diesel fuel system, it is worth verifying the condition of the air mass sensor as well. To better understand the relationships between air flow and fuel dosing, selecting parts by OEM number, and the principles of fuel system operation, the following article will be helpful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Selection, installation, and operation in Land Rover Discovery 3

The selection of an air flow meter for the Land Rover Discovery 3 L319 should be based on compliance with the manufacturer's markings and fuel type. Using the correct sensor for a diesel engine reduces the risk of adaptation problems and allows for maintaining operating parameters consistent with factory specifications. During installation, it is worth paying attention to:

• the cleanliness of the intake duct and air filter,
• the absence of leaks in the hoses between the filter and the turbocharger,
• proper seating of the electrical connector without looseness or contact corrosion. Such an approach reduces the risk of signal interference and allows for fully utilizing the sensor's capabilities in daily operation.

Expanding the intake system in Land Rover

If you are planning a comprehensive repair or upgrade of the engine area in your Land Rover and need other components from the same group, such as additional pressure sensors, temperature sensors, or air and fuel flow control elements, check the available parts in the Land Rover air and fuel intake sensors category.