Ford Transit Custom Mk1 Lambda Sensor Oxygen Lambda Probe 2.0 Diesel GK215E145AD

Ford Transit Custom Mk1 Lambda Sensor Oxygen Lambda Probe 2.0 Diesel is a specialized exhaust system component designed for diesel engines, responsible for the precise measurement of exhaust gas composition and nitrogen oxide content. Thanks to this sensor, the engine control unit can effectively manage the combustion process, which translates into stable engine operation, proper functioning of exhaust emission control systems, and compliance with emission standards. This solution is dedicated to users who expect a proven, original component with predictable operating parameters.

Specifications and technical data

• SKU: GK21-5E145-AD
• Mark: Ford
• Condition: Used
• OEM Part Number: GK215E145AD
• Substitutable numbers: GK215E145AD, GK21-5E145-AD
• Fuel type: Diesel
• Category: Oxygen Sensors

Purpose and function in the exhaust system

The presented NOX sensor belongs to the Lambda sensors and O2 sensors group and works with the 2.0 diesel engine, monitoring exhaust gas composition in real time. Its task is to provide the engine control unit with accurate information about nitrogen oxide and oxygen content, which enables:

• precise control of fuel dosage and injection system operation,
• proper functioning of exhaust emission control systems (e.g., catalytic converter, NOX reduction systems),
• maintaining stable engine operating parameters under various load conditions,
• reducing the risk of the unit entering limp mode due to emission-related errors.

For commercial vehicles such as the Transit Custom Mk1, a properly functioning NOX sensor is crucial for maintaining fleet efficiency, reducing service downtime, and keeping operating costs predictable.

Benefits of using an original Ford sensor

As a Ford brand component, the sensor has been designed for full integration with the factory engine control unit software and the vehicle's electrical installation. In practice, this means:

• appropriate measurement characteristics matched to the specific diesel engine,
• proper cooperation with factory control maps and OBD diagnostics,
• reduced risk of errors related to incompatible sensor parameters,
• easier data interpretation by diagnostic testers during service.

Choosing an original component is particularly important in the case of advanced electronic elements, such as NOX sensors, where even small differences in characteristics can lead to emission problems, increased fuel consumption, or unstable engine operation.

Performance characteristics and installation

The offered item comes from a group of used parts, which allows for an economical repair of the exhaust system while maintaining factory specifications. The sensor is designed to operate in a high-temperature environment and exposure to exhaust gases, which is why its construction accounts for resistance to thermal and chemical loads typical for diesel engines.

During installation, it is worth paying attention to:

• proper routing of the cable and connectors to avoid mechanical damage and overheating,
• applying the correct tightening torques in accordance with service documentation,
• checking the condition of the electrical installation and clearing any errors in the control unit after replacement.

After correct installation and control unit adaptation, the sensor supports stable engine operation, reduces the risk of emission warning lights, and helps maintain proper combustion parameters in daily use.

Why choose a used NOX sensor

In the case of advanced electronic components, choosing a proven, used part can be a reasonable compromise between cost and functionality. A used NOX sensor allows you to:

• reduce repair costs compared to a new component,
• maintain the vehicle manufacturer's original specifications,
• maintain proper cooperation with existing control unit software.

If you want to better understand how to safely select and install used modules and sensors in modern cars, it is worth reading the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?. You will find practical tips there regarding selection by OEM numbers, hardware and software compatibility, and installation procedures.

Expansion of the exhaust measurement system in Ford

If you are planning a comprehensive repair or upgrade of the exhaust and emission control area in your Ford and need other elements from the same group, such as additional probes, oxygen sensors, or exhaust composition measurement elements, check the available parts in the Ford Lambda sensors and O2 sensors category.

For drivers who also care about environmental and economic aspects, an interesting supplement to knowledge may be an article on the conscious use of second-hand parts: Eco-driving: discover the benefits of used car parts. It allows you to look at the choice of used components not only through the prism of costs, but also from the perspective of sustainable vehicle operation.