# P203F on the 2021 Ram 4500

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 P203F

- [10221186](https://open.wenmarpro.com/bulletins/10221186), 2022-09-26: P203E and P203F Additional Diagnostic Information This bulletin provides additional information regarding diagnosing Diesel Exhaust Fluid \(DEF\) issue in extreme cold weather. Diagnostic Trouble Codes \(DTCs\) P203E \- Reductant Level Sensor 1 Circuit Intermittent and/or P203F \- Reductant Level Too Low set.
- [10204384](https://open.wenmarpro.com/bulletins/10204384), 2021-12-13: P203E and P203F Additional Diagnostic Information This bulletin provides additional information regarding diagnosing Diesel Exhaust Fluid \(DEF\) issue in extreme cold weather. Diagnostic Trouble Codes \(DTCs\) P203E \- Reductant Level Sensor 1 Circuit Intermittent and/or P203F \- Reductant Level Too Low set.
- [10194039](https://open.wenmarpro.com/bulletins/10194039), 2021-05-24: P203E and P203F Additional Diagnostic Information This bulletin provides additional information regarding diagnosing Diesel Exhaust Fluid \(DEF\) issue in extreme cold weather. Diagnostic Trouble Codes \(DTCs\) P203E \- Reductant Level Sensor 1 Circuit Intermittent and/or P203F \- Reductant Level Too Low set.