Cummins Diesel Exhaust Fluid Pressure Sensor Location

The Cummins diesel exhaust fluid pressure sensor is located at the back of the engine, near the DEF tank. It is usually mounted on the frame rail or directly above it. This sensor measures the temperature and pressure of DEF in order to ensure proper operation and performance from your vehicle’s emission control system.

The location of this sensor can vary depending on make and model, but it will typically be found close to where the emissions device connects to its supply line. Additionally, some vehicles may also have an additional pressure switch located nearby that works with this particular component as well.

The Cummins Diesel Exhaust Fluid Pressure Sensor is located on the DEF (Diesel Exhaust Fluid) tank, and it measures the pressure of the fluid in order to ensure that all components are functioning properly. This sensor is an important part of keeping your diesel engine running smoothly, as it helps detect problems such as low DEF levels or a clogged filter. By regularly monitoring this sensor and taking care to keep the DEF tank filled with fresh fluid, you can help extend the life of your diesel engine and avoid costly repairs down the road.

What a bad Sensor could do to your Engine

Where is the Def Fluid Sensor?

The DEF (Diesel Exhaust Fluid) fluid sensor is an important part of any diesel vehicle. It’s responsible for monitoring the amount of fluid in the tank and ensuring that it doesn’t go below a certain level. In order to keep your vehicle running smoothly and efficiently, it’s essential that you check your DEF fluid regularly.

Fortunately, locating this sensor isn’t too difficult – it usually sits on the right side of the engine bay near the top of the radiator core support. Depending on your exact model, you may have to remove some covers or plastic pieces to access it properly; however, once located, simply unplugging and replugging should be enough to reset and recalibrate its readings. If there are any issues with levels being inaccurate or not displaying correctly then you may need to replace or adjust the position/angle of this unit as well.

Where is the Exhaust Pressure Sensor on a 6.7 Cummins?

The exhaust pressure sensor on a 6.7 Cummins is located in the exhaust manifold, typically close to the turbocharger or wastegate. The sensor measures the amount of exhaust gas pressure and sends that information back to the engine computer so it can make adjustments for optimal performance. This type of sensor helps maintain proper air/fuel ratios, reduce emissions, and improve fuel economy.

In some cases, this sensor may also be used to control boost levels from the turbocharger. It’s important that your vehicle’s exhaust pressure sensors are working correctly in order to ensure efficient operation of your engine and vehicle as a whole. If you’re having problems with your 6.7 Cummins’ performance or fuel economy, it might be time to inspect or replace its exhaust pressure sensor!

Why is My Def Light on But Tank is Full?

If your DEF light is on but the tank is full, it likely means there’s an issue with the DEF level sensor. This sensor usually fails due to clogs from old fluid or sediment build-up inside of it. It could also be damaged if you frequently fill up your tank too quickly, which can cause air bubbles to form in the line and prevent accurate readings.

The best way to fix this issue is by having a mechanic clean and replace the DEF level sensor. They may need to access the bottom of the vehicle for this task, so make sure they have all necessary safety equipment before starting work. Once they’ve installed a new DEF level sensor, they should reset any associated codes that are triggered by low levels or poor performance of this component.

If all goes well, you should see your check engine light go off shortly after!

What Sensors are on the Def Pump?

The DEF pump is a critical component of many diesel engines, and it relies on sensors to ensure that the engine runs efficiently. The most important sensor on the DEF pump is the pressure sensor, which measures the fuel pressure in order to maintain optimal performance. Other important sensors include temperature sensors, flow sensors, and level indicators.

Temperature sensors measure coolant temperatures so that adjustments can be made if needed for proper operation. Flow sensors help adjust fuel flow rate by monitoring intake air volume and exhaust gas composition levels. Level indicators are used to monitor fluid levels in order to prevent overfilling or running out of fluid during operation.

Together, these various types of sensors allow the DEF pump to perform its duties accurately and reliably while ensuring maximum efficiency from your diesel engine system.

Cummins Diesel Exhaust Fluid Pressure Sensor Location


Diesel Exhaust Fluid Pressure Sensor Cummins

The diesel exhaust fluid pressure sensor on a Cummins engine is used to measure the amount of DEF that passes through its system. This helps ensure proper operation and fuel efficiency, as well as reduce emissions in accordance with EPA standards. The sensor works by measuring the pressure created when the DEF flows from its reservoir into the injector rail, which then sends this information to the onboard computer for analysis.

Accurate readings can help prevent damage or malfunctions caused by low levels of DEF in your vehicle’s system.

Cummins Dpf Differential Pressure Sensor Reading

The Cummins DPF Differential Pressure Sensor Reading is a valuable piece of information that allows drivers to monitor the performance of their diesel particulate filter (DPF). This reading provides an indication of how efficiently the DPF is working, which helps drivers make decisions about when to perform maintenance or replacement on their vehicle. The Cummins DPF Differential Pressure Sensor Reading can be found in many modern diesel engines and can be read using specialized software connected directly to the engine management system.

Exhaust Gas Pressure Sensor 6.7 Cummins

The Exhaust Gas Pressure Sensor 6.7 Cummins is a key component in the performance and efficiency of your diesel engine. This sensor monitors exhaust gas pressure and sends signals to the ECM (Engine Control Module) which can then adjust fuel injection timing, turbo boost pressure, etc., for optimum engine performance. By making sure that this sensor is working properly, you can ensure that your diesel engine runs smoothly and efficiently.


In conclusion, the Cummins Diesel Exhaust Fluid Pressure Sensor is an essential part of any diesel engine that uses DEF. It is responsible for monitoring the DEF pressure in order to ensure proper operation. Knowing where it is located can help when troubleshooting or diagnosing issues with your vehicle’s DEF system.

The sensor is typically found near the injectors and connected to a main wiring harness on most makes and models of Cummins engines. With this knowledge about its location, you should now be better equipped to maintain your diesel engine’s DEF system properly and keep it running smoothly.


  • Zayn

    John Zayn Smith is a renowned truck enthusiast, automotive industry expert, and author. Beginning his career as a mechanic, Zayn's curiosity led him to explore all facets of the trucking world, sharing his insights through in-depth articles on His knowledge spans truck mechanics, trends, and aftermarket modifications, making him a trusted resource for both professionals and hobbyists. Outside writing and mechanics, Zayn enjoys off-roading, truck shows, and family time. Follow his work for the latest in truck-related news and tips.

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