Land Rover Discovery Sport L550 Air Charge Temperature Sensor H4P3-12B676-AA

Land Rover Discovery Sport L550 Air Charge Temperature Sensor H4P3-12B676-AA is an original component from the Air and fuel intake sensors group, designed for precise measurement of intake air temperature in the intake system. An accurate temperature reading is crucial for the proper operation of the engine control unit, optimal fuel metering, and stable power characteristics in your Land Rover.

Specifications and technical data

• SKU: LR091865
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR091865
• Substitutable numbers: LR091865, H4P3-12B676-AA, H4P312B676AA
• Part type: Sensor
• Category: Air Intake & Fuel Sensors

Purpose and function of the sensor

The presented air temperature sensor works with the intake system, providing the engine control unit with information necessary to calculate air density and adjust the fuel dose. A properly functioning component of this type:

• stabilizes engine operation across the full load range,
• reduces the risk of excessive fuel consumption,
• supports the maintenance of correct exhaust emission parameters,
• ensures predictable throttle response. Thanks to the use of an original solution dedicated to the Land Rover Discovery Sport L550, the measurement characteristics remain consistent with the factory ECU maps.

Benefits of using an original sensor

Choosing a sensor from the Air and fuel intake sensors group sourced from the vehicle manufacturer allows you to avoid problems typical of generic replacements. The appropriate resistance characteristics and correct signal scaling translate into:

• consistency of readings with other sensors in the engine control system,
• lower risk of error codes appearing in the ECU memory,
• better repeatability of engine performance parameters under various temperature conditions. This solution is particularly important in modern units, where the controller heavily relies on data from intake sensors for real-time engine adaptation.

Product characteristics and installation

The offered air temperature sensor is a component designed for integration with the existing intake system in the Land Rover Discovery Sport L550. The connector design and mounting method are adapted to the factory wiring harness and intake housing, which facilitates installation and reduces the time required for replacement. Before installation, it is recommended to verify compatibility with the vehicle based on the OEM part number or interchangeable numbers in the service documentation to ensure full compatibility with the specific engine version. A correctly selected sensor allows for the restoration of proper intake system operating parameters without the need for additional modifications.

Condition of the component and practical application

The product is in the used parts category, which allows for an economical repair of the intake system while maintaining the original manufacturer's specifications. This solution is suitable both for a typical replacement of a damaged sensor and for diagnosing problems with unstable engine operation, cold start difficulties, or incorrect response to load changes. Replacing a faulty air temperature sensor with a functional unit of this type is often one of the basic steps in the process of restoring correct fuel-air mixture parameters before resorting to more complex and expensive repairs.

Related intake and fuel system components

In case of engine operation problems, it is worth analyzing the entire supply and intake path – from air intake sensors, through fuel system components, to the engine control unit. To better understand the relationships between these components, part selection by OEM number, and operating principles, the following article will be helpful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. 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 temperature sensors, pressure sensors, or measuring elements in the supply path, check the available parts in the Land Rover air and fuel intake sensors category.