Cummins NOx sensors are a type of sensor used in diesel engines to measure the levels of nitrogen oxides (NOx) emitted by the engine. These sensors are part of the emissions control system and are critical to ensuring that diesel engines meet emissions standards set by regulatory bodies.
NOx sensors work by measuring the concentration of NOx in the engine exhaust. They typically consist of a ceramic sensing element that generates an electrical signal in response to changes in the concentration of NOx in the exhaust gas. This signal is then sent to the engine control module (ECM), which uses the information to adjust engine operation and optimize emissions performance.
If a Cummins NOx sensor fails or becomes damaged, it can lead to increased emissions and reduced engine performance. In some cases, a failed NOx sensor may trigger a warning light on the dashboard or cause the engine to enter a reduced power mode.
If you suspect that your Cummins NOx sensor is faulty, it’s important to have it diagnosed and repaired by a qualified mechanic as soon as possible to prevent further damage to your engine and to ensure compliance with emissions regulations.
The primary function of Cummins NOx sensors is to measure the concentration of nitrogen oxides (NOx) in the engine exhaust and provide this information to the engine control module (ECM) for emissions control and optimization. The ECM uses the NOx sensor readings to adjust the engine’s fuel injection, exhaust gas recirculation, and other parameters to reduce NOx emissions and meet regulatory requirements.
Here is a list of Cummins OE part numbers for NOx sensors for some of their engine models:
- Cummins ISB6.7: 5293295, 2894939
- Cummins ISC8.3: 5293295, 2894939
- Cummins ISL9: 5293295, 2894939
- Cummins ISX12: 4309445, 5293296
- Cummins ISX15: 4309445, 5293296
- Cummins QSX11.9: 5293295, 2894939
- Cummins QSX15: 4309454, 5293296
It’s important to note that the specific part numbers required may vary depending on the engine model and production year. It’s best to consult with a Cummins dealer or qualified mechanic to determine the correct part number for your engine’s NOx sensor.
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