Chrysler 300 2019–2022 — technical service bulletin
Bulletin 1400323 · NHTSA communication 10236935 · issued Apr 15, 2023
Technical service bulletin
communication type
Electrical System
component
2019–2022
model years
24
vehicle entries
Official summary
Diesel Exhaust Fluid (DEF) Fluid Freezing Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set: ? P203E-00 - Reductant Level Sensor 1 Circuit Intermittent-Erratic. This bulletin involves replacing the urea delivery module and grade vent valve and updating the Dosing Control Unit (DCU) software.
Vehicles covered
- 2021 Chrysler 300
- 2022 Chrysler 300
- 2020 Dodge Challenger
- 2021 Dodge Challenger
- 2022 Dodge Challenger
- 2020 Dodge Charger
- 2021 Dodge Charger
- 2022 Dodge Charger
- 2019 RAM 2500
- 2020 RAM 2500
- 2021 RAM 2500
- 2022 RAM 2500
- 2019 RAM 3500
- 2020 RAM 3500
- 2021 RAM 3500
- 2022 RAM 3500
- 2019 RAM 4500
- 2020 RAM 4500
- 2021 RAM 4500
- 2022 RAM 4500
- 2019 RAM 5500
- 2020 RAM 5500
- 2021 RAM 5500
- 2022 RAM 5500
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.