<p>This study reports the development and application of a voltammetric sensor for the simultaneous detection of carbendazim (CBZ), using a glassy carbon electrode (GCE) modified with hydrothermal carbon black, MXene, and PEDOT: PSS as a conductive polymeric binder (MXene-CBH-PEDOT/GCE). The electrode surface was modified by drop-casting the MXene-CBH dispersion on it, while morphological characterization of the materials was performed by scanning electron microscopy (SEM). The electrochemical behavior of CBZ was studied using cyclic voltammetry in the potential range of 0 to 1.2&#xa0;V. An oxidation peak was observed during the anodic scan at a potential of 0.75&#xa0;V. Compared to the bare GCE, the anodic peak currents (<i>I</i>_p.a.) recorded for the MXene-CBH-PEDOT/GCE sensor was significantly higher (recorded an increase in peak current by a factor of 5.1). The results obtained from SWV under optimized conditions showed that the proposed method exhibited linear concentration ranges from 5.0 × 10⁻⁷ to 3.8 × 10⁻⁵ mol L⁻¹ for CBZ, with a limit of detection (LOD) of 7.0 × 10⁻⁸ mol L⁻¹. The MXene-CBH-PEDOT/GCE sensor exhibited excellent repeatability with no interference effects when applied for CBZ detection in the presence of potential interfering compounds. The proposed method was successfully applied for CBZ (two concentration levels) determination in orange juice and environmental samples, where recovery rates of approximately 100% were obtained.</p> Graphical abstract <p></p>