Lambda Sensors

Lambda sensors detect oxygen concentration levels in the combustion mixture, helping burn fuel more efficiently and control emissions.

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How to install

How lambda sensors work

Types and characteristics

Catalogues and marketing materials

Installation and fault finding

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Lambda Sensors

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How lambda sensors work

Features and benefits

Plays a central role in reducing fuel consumption and improving engine efficiency.
OE standard of quality and reliability.
Multiple housing and fitting types available.
Improving technology helps lower emissions and meet regulations.

Proprietary technology
DENSO has been developing lambda sensors since the 1970s and has been responsible for several leaps forward in sensor technology. Some technologies, such as the A/F Sensor type that meets EURO 3 and tighter regulations, are exclusive to DENSO.
High build quality
Premium materials and construction methods, along with unique protective features such as the ‘double trap’ layer surrounding the sensing element, keep DENSO Lambda Sensors free of issues for longer.
Optimised range
Thimble and planar types, linear and switched sensors, and different housings and fittings are all available as part of a ‘smart consolidated’ range with minimal risk of installation errors.

Types and characteristics

The DENSO Lambda Sensor range is designed to maximise aftermarket coverage without requiring workshops to carry prohibitive amounts of stock. Many types of sensor are available.

Lambda Sensors types

O2 sensors

A/F sensors

Fittings

Housings

Characteristics

Catalogues and marketing materials

To find out more about Lambda Sensors browse the Downloads Area section. Click here.

Installation and fault finding

Correct installation and regular checks and replacements are recommended to keep lambda sensors functioning as intended. Follow our guides for best practice. Check the Download section for more information.

Installation

To install a lambda sensor safely and correctly, always follow the part instructions and manufacturer guidelines. We have compiled some general advice to help you succeed:

Fault finding

As a result of sensor contamination or damage lambda sensors can start operating out of specifications. When this happens, the ECU can recognize inconsistent signals, and ignore the its feedback completely. The engine will start running in an “open loop” mode and the check engine light will come on. Other symptoms that can be related to malfunctioning oxygen sensors are an increased fuel consumption (up to 30%) and uneven running engine. Also, the problems can be discovered during a emission test, indicating excessive levels of HC and CO, for example. For more detailed diagnostic tips, please sign up for our webinars or e-learning courses.