# P0420 on the 2021 Ford Bronco Sport

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 P0420

- [10241542](https://open.wenmarpro.com/bulletins/10241542), 2023-09-01: Some 2020\-2022 Escape built and 2021\-2023 Bronco Sport vehicles, built on or before 28\-Sep\-2022, equipped with a 1.5L Ecoboost engine and a 8F35 transmission may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble code \(DTC\) P0420 stored in the powertrain control module \(PCM\). This may be due to the catalytic converter. To correct this condition, follow the Service Procedure to replace the catalytic converter.
- [10200984](https://open.wenmarpro.com/bulletins/10200984), 2021-09-04: Some 2021 Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may exhibit a no crank/no start start condition with an illuminated malfunction indicator lamp \(MIL\) and one or more of the following diagnostic trouble codes \(DTC\): P093B, P2282, P0420, P062B, P21D1, P21D0, P21CF, P0710, and/or P0712. This may be due to a damaged wiring harness at the transmission cover. If damage is found, repair as necessary. Refer to Wiring Diagram Cell 005.