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March 31, 2026 Service bulletin

Diesel Exhaust Fluid (DEF) Gauge Fluctuates Or Is Erratic

Ram technical service bulletin S2525000002 REV.B for 2025-2026 Ram 2500, 2025-2026 Ram 3500 and 2025-2026 Ram 5500 and others.

Bulletin number
S2525000002 REV.B
Component
Unknown or other
Summary
Diesel Exhaust Fluid (DEF) Gauge Fluctuates Or Is Erratic. Diagnostic Trouble Code (DTC) P203F – Reductant Level Too Low.

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