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Service bulletins for the 2018 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.

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

By type

By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
S21090000012021-02-16. Service bulletin. ENGINE AND ENGINE COOLING. Customer may complain of a MIL lamp on. Upon further investigation there could be a fault code in the PCM for P1524 ? Oil Pressure Out of Range ? Camshaft Advance/Retard Disabled.
S1709000010 Rev.2021-02-16. Service bulletin. ENGINE AND ENGINE COOLING. Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. Upon investigation, it may be found that there is excessive camshaft lobe wear/lifter wear (roller failure) on one or more cam lobes and that camshaft/lifter replacement is necessary.
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.
S1925000008 Rev.2020-12-21. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE; FUEL SYSTEM, DIESEL. (Rev. B) Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P20E8 ? Reductant Pressure Too Low and/or P208B ? Reductant Pump 1 Control Performance Set.
S1625000005 Rev.2020-12-21. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. (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.
18-069-202020-09-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs):P0133-00 - O2 Sensor 1/1 Slow Response. P20EE-00 - SCR NOX Catalyst Efficiency Below Threshold Bank 1. P050E-00 - Cold Start Engine Exhaust Temperature Too Low. U0402-00 - Implausible Data Received From TCM. P0299-00 - Turbocharger Underboost Condition. P0402-00 - EGR Flow Excessive Detected. P249C-00 - Excessive Time To Enter Closed Loop Reductant Injection Control. P208B-00 - Reductant Pump 1 Control Performance. P20C6-00 - Reductant Heater 4 Control Circuit Performance. P245B-00 - EGR Cooler Bypass Control Circuit Performance. Other software enhancement.Ability to enable the ?Fuel System Cleaning? routine in wiTECH.
S1925000008 Rev.2020-09-28. Service bulletin. EXTERIOR LIGHTING; FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. (Revision A) Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P20E8 ? Reductant Pressure Too Low and/or P208B ? Reductant Pump 1 Control Performance Set.
S20080001132020-09-28. Service bulletin. ENGINE; ELECTRICAL SYSTEM. No Start Intermittently, Vehicle Requires Multiple Keyless Push To Start Attempts To Start Vehicle
09-009-202020-07-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE); EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Improperly Installed Exhaust Gas Recirculation (EGR) Valve This bulletin involves removing and inspecting the vacuum tube, EGR tube gaskets, tube flange mounting bolts and possibly replacing the EGR tube gaskets and torquing the flange bolts. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set:P245B - EGR-Cooler-Bypass-Control-Circuit-Performance. The customer may also notice one or more of the following:An exhaust smell in the cabin. A whistle noise coming from the engine compartment.
S20090000022020-06-22. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL. Oil Leak From The Front Timing Gear Housing Gasket. (Note: ETL, ETK, ETM, ETN Diesel Engines)
S19250000082020-06-22. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P20E8 ? Reductant Pressure Too Low and/or P208B ? Reductant Pump 1 Control Performance Set.
09-005-202020-04-27. Service bulletin. ENGINE AND ENGINE COOLING. 3.0L Oil Filter Cartridge Identification Differences And Oil Filter Element Servicing Procedure This bulletin outlines the correct procedure for changing an oil filter on a 3.0L diesel to prevent engine damage. The bulletin also highlights the design differences in the oil filter cartridges used in the GEN-2 and GEN-3 3.0L diesel. As well as potential issues that can arise should the incorrect filter be used in each application.
OD61336A2020-01-21. Service bulletin. ENGINE AND ENGINE COOLING. VB1 2014-2019MY DS 3.0L Diesel EGR Cooler (OD61336 Linked Document - Coolant Level Check Tutorial)
OD613362020-01-21. Service bulletin. ENGINE AND ENGINE COOLING. Safety Recall VB1: 2014-2019 DS 3.0L EGR Cooler Customer Handling
18-089-192019-12-16. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE. wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK
09-003-192019-12-02. Service bulletin. ENGINE AND ENGINE COOLING. GEN-2 and GEN-3 - 3.0L Oil Filter Cartridge Identification Differences This bulletin highlights the design differences in the oil filter cartridges used in the GEN-2, and GEN-3 3.0L diesel. As well as potential issues that can arise should the incorrect filter be used in each application. Although similar in design, the oil filter cartridges used on the GEN-2 and GEN-3 3.0L diesel engines are different in design. Interchanging them may result in premature engine damage over time.
90039682019-10-28. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; ENGINE. CONDENSER, Air Conditioning If it is determined that the A/C compressor does not engage due to a refrigerant leak at the receiver/drier plug on the A/C condenser, order the receiver/drier plug kit P/N 68447796A$ and follow the repair instructions included on the instruction sheet.
OD553412019-07-15. Service bulletin. EQUIPMENT; ENGINE. Vehicles Eligible For CSN U07 And V08, V11 or V16 Important Update To U07 Dealer Instructions
549352019-07-15. Service bulletin. ENGINE; EQUIPMENT. Sensor-nitrous oxlde
553112019-07-15. Service bulletin. EQUIPMENT; ENGINE. Damper-Steering
553222019-07-15. Service bulletin. EQUIPMENT; ENGINE. Head-Cylinder
553242019-07-15. Service bulletin. ENGINE. Head-Cylinder
552212019-07-15. Service bulletin. ENGINE; EQUIPMENT. Engine Oil- OW20
550962019-07-15. Service bulletin. ENGINE. Engine Oil- OW20
549312019-07-15. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. TAILPIPE - EXHAUST

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