The implementation of Gate Diffusion Input (the GDI system) logic is a strong contender to replace conventional CMOS technology in approximation computing, where the need for faster operations with less computational effort is essential. The expansion and mobility of electronic devices has led to a rise in the need for low-power applications, fast connectivity digital circuits with compact silicon surfaces. The design is suitable for compact, energy-constrained applications and critical for prolonged usage, such as wearable devices, portable technologies and the IoT devices. Since any alteration to the entire adder circuit will impact the system's performance, there is a significant interest in creating and studying low-power and high-performance adders. This study describes the design and implementation of a full-swing one-bit GDI Energy as well as Area Efficient Full Adder using substrate biasing that is especially tailored for low power as well as error-tolerant applications. In order to enhance the substrate terminal's functionality and performance, changes have been made to the EAFA design. The proposed architecture streamlines circuitry and enhances computational speed at the expense of acceptable accuracy. The proposed EAFA presents a novel approach that excels in energy, delay and area efficiency, while simultaneously minimizing error distance. The design achieves an average reduction of 93, 80 and 41% in power dissipation, delay and transistor count. The design contributes to significant advancements in low-power computing by addressing the growing demand for energy-efficient circuits. The application of this solution promises to deliver significant benefits over competing alternatives. The detailed analysis, simulation and performance evaluation are done using the Cadence Virtuoso EDA tool @90 nm process node. The simulation process confirms that the metrics related to delay, area and power dissipation are superior.