Turn a regulation change into less downtime.

DEF Quality Sensor failures can mean lengthy diagnostics, costly replacement and equipment sitting idle. DEFsensor offers a simple, plug-and-play, non-invasive way to address sensor-related issues—without modifying the engine or ECU.

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01 · The change

Traditional UQS is no longer the only path

EPA guidance issued in March 2026 clarified that manufacturers may use approved alternative DEF quality monitoring strategies, including NOx-sensor-based approaches.

02 · The problem

A small sensor can create a major standstill

The quality sensor sits inside the DEF header with fluid-level and temperature sensing components. When it fails, diagnostics, replacement and downtime can quickly add up.

03 · The benefit

A clean, non-invasive replacement approach

Disconnect the original sensor connection and install the matching DEFsensor device. No ECU reprogramming, engine modification or specialist computer is required.

Compatibility matters. EPA guidance applies to approved emissions-monitoring strategies; suitability and lawful use can depend on the engine, equipment and application. Contact DEFsensor to confirm the correct version for your machine.

Plug-and-play DEF solution

DEFSENSOR

500,00 $

In stock and ready to order

DEFsensor.com offers a simple, plug-and-play replacement solution for the DEF Quality Sensor. Simply disconnect the original DEF sensor and install our device in its place - that’s it.

Installation requires minimal effort, involves no modifications to the engine or ECU, and is completely non-invasive.
Our solution is designed to align with the latest EPA requirements regarding DEF Quality Sensors, providing a straightforward replacement option that complies with current EPA regulations and standards.

Simple plug-and-play installation
No ECU reprogramming required
Non-invasive installation

Not sure about compatibility?

+1 725 726 3040

DEF Quality Sensor Delete solutions are available for a wide range of brands and applications, including construction equipment, trucks, tractors, generators, crushers, agricultural machinery, and many more.

Our device provides a simple solution to the need created by the latest EPA requirements regarding DEF Quality Sensors. Because DEF Quality Sensors are known to be prone to failure, we developed a straightforward way to eliminate sensor-related issues while remaining aligned with current emissions regulations.

The system requires no computer, ECU reprogramming, software changes, or invasive modifications to the machine or engine. Thanks to its plug-and-play design, installation is quick, simple, and requires minimal effort.

Find out if our DEF Sensor Delete is compatible with your machine!

Contact us and choose the version best for your machine.

+1 725 726 3040

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