03 December, 2025PACCAR MX (2004 Emissions) Fault Code: P0149 Fuel Injection Control – Malfunction Detected PACCAR MX (2004 Emissions) Fault Code: P0149 Fuel Injection Control – Malfunction Detected IMPORTANT: Do not troubleshoot this DTC. POSSIBLE CAUSES:No repairs are necessary. ADDITIONAL INFORMATION:The driver is not informed by a warning when this DTC is active. Compartir en Facebook Se abre en una nueva ventana. Compartir en Twitter Se abre en una nueva ventana. Guardar en Pinterest Se abre en una nueva ventana. Regresar al blog