P203E and P203F Additional Diagnostic Information
Ram technical service bulletin 1803421 for 2019-2021 Ram 2500, 2019-2021 Ram 3500 and 2019-2021 Ram 5500 and others.
- Bulletin number
- 1803421
- Component
- Fuel system, diesel
- Summary
- 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.
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