Range Rover L405 Exhaust Gas Temperature Sensor 4.4 Diesel AL31-12B591-AA

Range Rover L405 Exhaust Gas Temperature Sensor 4.4 Diesel AL31-12B591-AA is an original exhaust system component designed for 4.4 diesel engines in the Range Rover L405 model. The sensor is responsible for precise exhaust gas temperature measurement, which supports the correct operation of the engine control unit and the exhaust gas purification system.

Specifications and technical data

• SKU: LR022904
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR022904
• Substitutable numbers: LR022904, AL31-12B591-AA, AL3112B591AA
• Location on the vehicle: Right
• Fuel type: Diesel
• Category: Other Exhaust & Emission Parts

Purpose and Function of the Exhaust Gas Temperature Sensor

The exhaust gas temperature sensor in the Range Rover L405 with a 4.4 Diesel engine operates in the demanding environment of the exhaust system, monitoring the temperature of the exhaust gases. Correct reading of this value is crucial for:

• combustion process control and protecting the powertrain from overheating,
• proper operation of the exhaust gas purification system (including regeneration strategies for emission reduction components),
• maintaining stable diesel engine operating parameters under various load conditions.

The component is mounted on the right side of the vehicle, in accordance with the factory configuration of the exhaust system in the Range Rover L405 with a diesel engine.

Construction, Installation, and Compatibility

The offered exhaust gas temperature sensor is part of the Other category for the Land Rover brand, meaning it is a specialized exhaust system component dedicated to a specific application in the Range Rover L405 4.4 Diesel. The sensor's construction is adapted to high temperatures and variable operating conditions typical for diesel engines.

When installing, pay attention to:

• correct placement on the right side of the vehicle, in accordance with the factory wiring harness routing and thread in the exhaust system,
• proper electrical connection to the vehicle's system, so that the engine control unit receives a stable temperature signal,
• checking the connection's tightness at the point where the sensor is screwed into the exhaust component.

Due to the specific nature of operation in a diesel engine, using the correct sensor dedicated to this unit is important for maintaining correct control maps and engine protection strategies.

Performance Characteristics and Benefits of Use

Replacing a faulty exhaust gas temperature sensor with a functional component dedicated to the Range Rover L405 4.4 Diesel restores the correct operation of the engine control system. This translates to:

• stable powertrain operation without incorrect adjustments resulting from erroneous temperature readings,
• reduced risk of entering limp mode due to exhaust system-related errors,
• maintaining appropriate exhaust emission parameters, in line with the vehicle's design specifications.

As an original Land Rover part, the sensor is designed to work with the factory control unit software, which facilitates diagnostics and subsequent vehicle operation.

Product Condition and Service Application

The offered exhaust gas temperature sensor is a used part, making it an attractive option for service repairs where maintaining original specifications while optimizing costs is a priority. This type of component is suitable for both professional workshops specializing in the Land Rover brand and for discerning users who service their vehicles themselves.

Before installation, a standard diagnostic procedure for the exhaust system is recommended, followed by verification of correct operation after installation using an appropriate diagnostic tester.

If you are looking for other parts in the Other category dedicated to this brand, check out our offer for Land Rover Other, where you will find a wide selection of components for off-road models and luxury SUVs.

To compare the characteristics of different sports powertrains and their components, you can read an article on our blog: Audi RS vs. Other Models – What Lies Under the Hood and Chassis?, which discusses design and operational differences in the context of parts selection.