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Service bulletins for the 2020 Ram 2500

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.

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

By type

By component

By trouble code

By topic

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
08-052-212021-04-26. Service bulletin. SEAT BELTS; ELECTRICAL SYSTEM. Flash: Radio Frequency Hub Module (RF-HUB) Updates This bulletin involves reprogramming the RF-HUB with the latest software available. The customer may experience the following:The key fob won't unlock the doors while the vehicle is running and after a remote start.
18-012-21 REV. A2021-04-26. Service bulletin. FUEL SYSTEM, DIESEL; SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM; BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE; EXTERIOR LIGHTING. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set:P20E8-00 - Reductant Pressure Too Low. P0301-00 - Cylinder 1 Misfire(Sym Cam Pump Only). P0302-00 - Cylinder 2 Misfire (Sym Cam Pump Only). P0303-00 - Cylinder 3 Misfire (Sym Cam Pump Only). P0304-00 - Cylinder 4 Misfire(Sym Cam Pump Only). P0305-00 - Cylinder 5 Misfire(Sym Cam Pump Only). P0306-00 - Cylinder 6 Misfire(Sym Cam Pump Only). P1C54-00 - SCR NOx Catalyst Missing. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation (68RFE Only). P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1(68RFE Only). P1451-00 - Diesel Particulate Filter System Performance (68RFE Only). P0299-00 - Turbocharger Underboost. P2706-00 - MS Solenoid Circuit (68RFE Only). P1D73-00 - AGS Performance. P0299-00 - Turbocharger Underboost. P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1. P1451-00 - Diesel Particulate Filter System Performance. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation. P24A5-00 - EGR Cooler Bypass Bank 1 Control Stuck (Sales Code ETM). P20EE-00 - NOx Catalyst Efficiency Below Threshold(Sales Code ETM). P0420-00 - Catalyst System Efficiency Below Threshold Bank 1(Sales Code ETM). P2002-00 - Diesel Particulate Filter Efficiency Below Threshold (Sales Code ETM). P0191-00 - Fuel Rail Pressure Sensor Circuit Performance(Sales Code ETM). P0461-00 - Fuel Level Sensor 1 Performance(Sales Code ETM). P0401-00 - EGR System Performance(Sales Code ETM). P208B-00 - Reductant Pump 1 Control Performance(Sales Code ETM). The customer may also notice one or more of the following:Harsh downshift clunk during exhaust brake
S21230000142021-04-26. Service bulletin. ELECTRICAL SYSTEM. Winch Inoperative From Controller
90043572021-04-26. Service bulletin. ELECTRICAL SYSTEM. CABLE ASSY, Power Sliding Backlite Power Sliding Backlite inop, binding. When customer comes in for Power Sliding Backlite inop or binding make note of what condition the part is in and take pictures before disassembly. Please send pictures to FCA Redacted Content and load to the warranty claims system.
18-012-212021-03-15. Service bulletin. FUEL SYSTEM, DIESEL; SERVICE BRAKES, HYDRAULIC; EXTERIOR LIGHTING; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set. The customer may also notice one or more of the following:Harsh downshift clunk during exhaust brake decel
S21080000522021-03-15. Service bulletin. SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER; ELECTRICAL SYSTEM. Heated Seat LED Indicator Turns On And Back Off. One Or More Heated Seat DTC?s
S2008000041 Rev.2021-03-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS. Device Not Supported Message On Radio Screen
S21240000012021-03-15. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. High Speed Blower Position Inoperable When Using Plow Controls.
22-002-202021-03-01. Service bulletin. ELECTRICAL SYSTEM; TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. Tire Pressure Monitoring System (TPMS) Light On In Instrument Panel Cluster (IPC) This bulletin involves replacing and programing all Tire Pressure Monitor (TPM) Sensors. The customer may notice:The TPMS light illuminated in the instrument panel.
S2008000182 Rev.2021-03-01. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY. Driver Or Passenger Power Windows Do Not Go Up Or Down
90043342021-03-01. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Power Window Regulator or Motor Owners may complain that the Driver and or Passenger Windows are inoperative. Technician may find DTC?s B18BA-12 - Window Control - Circuit Short to Battery, B18BA-13 - Window Control - Circuit Open (stored or active). Replace the DDM or PDM per detailed repair information in Service Library or reference Star Online Publlication S2008000182. Replacing regulators or motors will not correct this issue.
08-015-212021-02-16. Service bulletin. ELECTRICAL SYSTEM. Radio Enhancements This bulletin involves updating the radio software level to 1848.34. Customers may experience one or more of the following:Radio display screen flickers. Radio resets with RPM less than 1000 RPM (DT and JL with 3.0L Diesel). Clock loses 6 seconds per day (JL with 5 inch screen). Ghost Touch, features, modes and App?s changing without drivers input. Bluetooth pop noise. Pop message ?SXM Wait? displayed for extended period of time. The radio resets.
S21080000222021-02-16. Service bulletin. ELECTRICAL SYSTEM. Service Trailer Brake Warning Message Displayed On The Cluster
S2108000003 Rev.2021-02-16. Service bulletin. ELECTRICAL SYSTEM; STEERING. Cluster Displays Blind Spot Alert Off Incompatible Trailer Message, Left Steering Wheel Switches Do Not Allow Update Or Change
08-101-202020-12-28. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE; ELECTRICAL SYSTEM. Heating, Ventilation and Air Conditioning (HVAC) Controls Inoperative This bulletin involves replacing the HVAC module. Customers may experience not being able to change the HVAC modes, both on the radios display or HVAC controls.
S20080001862020-12-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ELECTRICAL SYSTEM. Engine Control Module (ECM) Flash Failure, Diagnostic Trouble Code (DTC) U1601 ? ECU Application Software Code 1 Missing Or Corrupted
S20080001722020-12-28. Service bulletin. ELECTRICAL SYSTEM. Radio Screen Flickering When Using Apple CarPlay Or Android Auto.
S20080001692020-12-28. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY:DOOR; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. Drivers Front Window Makes Noise While Raising And Lowering
08-101-202020-12-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:APPLIANCE:AIR CONDITIONER. Heating, Ventilation and Air Conditioning (HVAC) Controls Inoperative This bulletin involves replacing the HVAC module. Customers may experience not being able to change the HVAC modes, both on the radios display or HVAC controls.
14-002-202020-12-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. 50 Gallon Fuel Tank Reconfiguration This bulletin involves inspecting the Powertrain Control Module (PCM) configuration data and performing the enable 50 gallon tank routine in wiTECH. 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:P0461 - Fuel Level Sensor 1 Performance(Set in the Powertrain Control Module (PCM)).
S20080001862020-12-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Engine Control Module (ECM) Flash Failure, Diagnostic Trouble Code (DTC) U1601 ? ECU Application Software Code 1 Missing Or Corrupted
S20080001722020-12-21. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Screen Flickering When Using Apple CarPlay Or Android Auto.
08-094-202020-11-30. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); EQUIPMENT. Flash: Drivetrain Control Module (DTCM) Update This bulletin involves reprogramming the DTCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set::If the customer has any concerns with the transfer case or if the tech performs any repairs on the transfer case, the software must be updated.C140E - Transfer Case Motor Blocked. If DTC C140E is present, follow normal diagnostic procedures before updating the DTCM.In addition the customer may describe the following:The ?Service 4WD? message/fault is displayed in the Instrument Panel Cluster (IPC). Transfer case shift fork tabs broken during range shift. Noisy (clunking/ratcheting) transfer case range shifts. Failure to complete transfer case range shifts. The following software enhancement is available:This update will help reduce premature transfer case failure.
S20100000012020-11-30. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Customer complaint of air bag lamp on. B0029-11-RIGHT CURTAIN DEPLOYMENT SQUIB 1-CIRCUIT SHORT TO GROUND
08-088-202020-10-26. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Squeak, Rattle, Or Metallic Tapping Sound From Under The Instrument Panel This bulletin involves Inspecting and replacing the AMP bracket fastener. The customer may describe one or both of the following:A bolt may have been found in the driver foot well. A squeak, rattle or metallic tapping sound from under the instrumentpanel (this is due to amp bracket being loose and hitting against the IP Cross Car Beam). They may mention noise worsens during whentraveling on rough/bumpy roads.

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