Exhaust Gas Temperature Sensors

To help vehicles meet strict emissions regulations, complex sensor systems are needed. These include exhaust gas temperature sensors (EGTS).

Exhaust Gas Temperature Sensors

How EGTS work

Within diesel engines, the exhaust gas temperature sensor (EGTS) can play multiple roles. Firstly, it detects the temperature of the exhaust gas, relaying this information back to the engine control unit (ECU) so it can take corrective action to keep temperatures within the expected range and protect engine components. Secondly, it monitors the temperature at the entry and exit points of the diesel particulate filter (DPF), helping maintain the correct temperature for optimum regeneration that keeps exhaust emissions as low as possible.

Based on information provided by the EGTS, the ECU can actively control engine running conditions through a number of measures such as lowering turbo boost pressure or changing valve or fuel injection timing.

It’s important for an EGTS to give a fast, accurate reading to allow an engine to regulate itself efficiently. As a result of long-standing innovation, DENSO pioneered the Negative Temperature Coefficient (NTC) EGTS sensor, wherein a high temperature corresponds with a low resistance, and vice versa. This technology is compatible with a large proportion of Europe’s car parc and supports a wide range of specifications and temperature ranges.

Features and benefits

  • Single tube sensing part structure for reduced volume size.
  • High responsiveness thanks to sensing part and shaped thermistor.
  • Withstands engine vibrations.
  • Detects temperature from -40 to 1000 degrees Celsius.
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Innovative design
The sensing element and sensing part of the EGTS are specially designed to achieve high performance in a design that is 90% smaller in volume.
Reliable performance
As well as being more compact, DENSO EGTS are heat- and vibration-resistant, meaning there’s no sensor breakage in the exhaust system.
High accuracy
The sensing part and the shaped thermistor enable high responsiveness – able to respond to a sudden increase from room temperature to 1000 degrees Celsius in less than 7 seconds.

Types and characteristics

DENSO’s unique EGTS design and wide range of products offer a suitable sensor type to fit a fast-growing number of applications and car models.

Exhaust Gas Temperature Sensors types

Responsiveness types

All DENSO’s sensors are highly responsive and accurate. To be sure you get the level of performance you need, we offer both standard and high-response versions of EGTS.

Temperature types

DENSO offers multiple specifications to car manufacturers, suitable for detecting different temperature ranges. These include Ultra Low Special (ULs), Low Special (Ls), Low (L), Mid High (Mh) and High (H) temperature sensors. Different types cannot be interchanged with one another.


DENSO offers a uniquely designed and precision-engineered product that provides high performance in an ultra-small size

Catalogues and leaflets

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