DEF Sensor : OEM ASP01DS11-FF

Accurate DEF Monitoring Starts with the Right Sensor

What Is It?

The DEF Sensor (OEM ASP01DS11-FF) is a factory-calibrated component responsible for detecting and reporting Diesel Exhaust Fluid (DEF) levels, quality, and temperature in emission systems. It plays a vital role in ensuring the system’s operation stays within emissions compliance standards and avoids system errors or derating.

Why Choose OEM ASP01DS11-FF?

With emissions technology becoming more complex, it's critical to use a DEF sensor that communicates accurately with your engine control unit (ECU). The OEM ASP01DS11-FF is engineered to match the precise calibration and compatibility requirements of your original emissions system, providing consistent readings and reducing the likelihood of fault codes or drivability issues.

Key Benefits

✅ Precision Sensing: Accurately reads DEF temperature, quality, and fluid levels
✅ OEM Calibrated: Matches factory specifications for seamless communication with ECU
✅ Durable Build: Resistant to DEF crystallization and harsh under-vehicle conditions
✅ Plug-and-Play Fit: Installs directly into factory harnesses and tank assemblies
✅ Reduces Downtime: Helps avoid false codes and unnecessary service interruptions

Applications

This DEF sensor is commonly used in a wide range of diesel-powered trucks, buses, and off-road equipment that rely on Selective Catalytic Reduction (SCR) systems. It ensures the DEF system remains functional and compliant by transmitting accurate data for emissions control and diagnostic purposes.

Installation Notes

Installation should be completed by qualified technicians or individuals familiar with SCR and DEF systems. Before installation, inspect the DEF tank and wiring harness for contamination, crystallization, or corrosion. After replacing the sensor, system reset or diagnostic checks may be necessary to clear any active fault codes.

Final Thoughts

For reliable DEF system monitoring, the OEM ASP01DS11-FF sensor delivers accuracy and compatibility you can count on. It's a practical solution for keeping your emissions system functional and compliant—without unnecessary maintenance headaches or guesswork.