WenmarOpen by Wenmar Pro

Service bulletins for the 2021 Ram 1500

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1129 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Exhaust and emissions are shown. Show all

Bulletins, newest first
Y812023-01-09. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, DIESEL. Emissions Recall Y81 Diesel Exhaust Fluid Inducement
S21180000152023-01-09. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P0403 ? EGR Control Circuit Open, Set.
11001212022-09-26. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Exhaust Tips Are Loose And Off Center This bulletin involves inspecting the exhaust tips for not being centered. Properly torquing the exhaust clamp. Customers may notice the exhaust tips are not centered in the bumper opening and loose.
90043452022-07-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE); EQUIPMENT; ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY. COOLER, EGR If you are replacing the high pressure EGR cooler (p/n 68490113A$) for a suspected internal coolant leak that was detected by wetness in the EGR pipe or valve, please perform proper cooling system pressure test first to verify the leak. Refer to all published service information regarding Cooling Diagnosis and Testing (LEAK TESTING) before proceeding.
90043432022-07-18. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE); EQUIPMENT ADAPTIVE/MOBILITY. VALVE, HIGH PRESSURE EGR If you are replacing the high pressure EGR valve (68490212A$) due to DTC P0407 or P0408 please refer to all published service information regarding proper diagnosis before proceeding. These DTCs are for the low pressure EGR system.
11001212022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; EQUIPMENT ADAPTIVE/MOBILITY. Exhaust Tips Are Loose And Off Center This bulletin involves inspecting the exhaust tips for not being centered. Properly torquing the exhaust clamp. Customers may notice the exhaust tips are not centered in the bumper opening and loose.
752272022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE AND ENGINE COOLING. MUFFLER AND TAILPIPE ? EXHAUST
Emissions Recall2022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Emissions Recall Y81 Diesel Exhaust Fluid Inducement
S1625000005 Rev.2020-12-28. Service bulletin. EQUIPMENT; FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. (Rev. A) Malfunction Indicator Light (MIL) Illuminated. Service Diesel Exhaust Fluid (DEF) System ? See Dealer Soon Message on Electronic Vehicle Information Center (EVIC) Along With Possible Diagnostic Trouble Code (DTC) P241D - SCR Inducement - Forced Engine Shutdown.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.