Understanding L5P Duramax Issues: Pump, Sensors and Lifespan
The L5P Duramax issues commonly involve high-pressure fuel pump failures, which can send metal debris through the system, along with faulty sensors like the fuel rail pressure sensor and NOx sensors. These problems often appear between 100,000–150,000 miles. Regular maintenance, quality fuel, and timely repairs help extend engine lifespan despite these known L5P Duramax issues.