4383978 | Genuine Cummins® Particulate Sensor

1. Track soot levels

• Measures the amount of particulate matter in the exhaust gas.

2. Protect the diesel particulate filter (DPF)

• Signals the engine when soot buildup requires DPF regeneration to prevent clogging.

3. Reduce harmful emissions

• Ensures the engine burns or filters soot efficiently, helping meet environmental standards.

4. Support engine performance and longevity

• Prevents excessive soot accumulation, which can damage the engine or exhaust components.

5. Provide diagnostic information

• Alerts the driver or ECU to potential issues with the exhaust or filtration system.

1. Check Engine Light or DPF Warning

• The ECU may trigger the warning light if it detects sensor malfunction or abnormal soot readings.

2. Failed or incomplete DPF regeneration

• The diesel particulate filter may not regenerate properly, leading to clogging and reduced efficiency.

3. Reduced engine performance

• The engine may enter limp mode to protect the DPF, resulting in lower power and restricted speed.

4. Excessive exhaust smoke

• Black smoke may appear if soot levels are not being monitored or controlled properly.

5. Poor fuel efficiency

• Incorrect soot readings can cause improper fuel injection timing or regeneration cycles, wasting fuel.

6. Strange or inconsistent sensor readings

• Diagnostic tools may show erratic or implausible particulate values.

7. Unusual odors or soot buildup

• Physical evidence of excess soot in the exhaust system may indicate the sensor is not functioning.