# P0401 on the 2021 Hyundai Sonata

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0401

- [10241875](https://open.wenmarpro.com/bulletins/10241875), 2023-09-06: This bulletin provides warranty procedure for EGR Valve replacement related to DTC P0401 EGR Flow Insufficient on 2020 and 2021MY Sonata \(DN8a\) equipped with 2.5 GDI Vehicles.