The error code 3798, indicating a low circuit error in the DPF differential pressure sensor, is commonly encountered in tractors such as the F5C, ISM-DI, and ISM-IDI. This error can be identified by the illumination of amber warning lights on these tractors. It is crucial to address this issue promptly to ensure the proper functioning of the DPF system and prevent potential engine damage. By resolving the low circuit error in the DPF differential pressure sensor, you can maintain the efficiency and reliability of your tractor's engine. Don't delay in taking action to rectify this error and safeguard your tractor's performance.