RAM
18-034-21
Manufacturer communications
- Publication date
- 2021-04-02
- Received by NHTSA
- 2021-05-24
- NHTSA record numbers
- 10194039
Manufacturer summary
Original wording in English
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.
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Ram
P203EReductant Level Sensor 1 Circuit IntermittentCheck vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.