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Service bulletins for the 2012 Dodge Ram

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.

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

By type

By component

By trouble code

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
1023072025-01-06. Service bulletin. POWER TRAIN. GEAR - REACTION SUN
1023872025-01-04. Service bulletin. POWER TRAIN. SEAL - OUTPUT SHAFT
1023892025-01-04. Service bulletin. POWER TRAIN. SEAL - OUTPUT SHAFT
1012322024-11-07. Service bulletin. POWER TRAIN. Plate - Planetary
18012142023-01-17. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. (PCM) with new software
18050142023-01-17. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Drone or Vibration Present During MDS Operation This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. New PCM software is being released to address a customer?s concern of a drone or vibration type condition while driving at highway speeds during MDS (Multiple Displacement System) operation.In addition, the following powertrain system improvements/enhancements are also included in this software release: Improved Electronic Voltage Regulator control to more precisely maintain system voltage. Enhanced Automatic Oil Change Indicator(EAOCI) system improvements to switch to a severe duty cycle algorithm anytime the PCM is replaced to ensure the customer receives a timely oil change required message. (Only applies to vehicles using a block heater in ambient temperatures greater than -20°F(-29°C)).
S17090000102023-01-09. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 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.
V512022-12-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); UNKNOWN OR OTHER. Customer Satisfaction Notification V51 Reprogram Powertrain Control Module
18105162022-10-17. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Updated OBD monitors to support the new regulations scope and requirements for Mexico (Regulation NOM042).
18100162022-10-17. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Diagnostic And System Enhancements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Codes have been set: U0140 - Lost Communication With Body Control Module (BCM) (12 MY DJ only) P0300 - Multiple Cylinder Misfire.The P0300 improvement only applies to vehicles using a block heater in ambient temperatures greater than -20°F(-29°C). P2008 - Short Runner Valve (SRV) Control Circuit. P1004 - Short Runner Valve Control Performance. P2016 - Intake Manifold Runner Position Sensor Circuit Low. P2017 - Intake Manifold Runner Position Sensor Circuit High. P0456 - Evap System Small Leak(applies only to vehicles equipped with a CNG engine): Excess gasoline mode operation under normal operating conditions (switching to gasoline mode too often). Slight hesitation on initial acceleration when starting in gasoline mode. Engine speed fluctuation on first gasoline to CNG mode transition under extremely low ambient temps.Also software enhancements were made to improve transmission durability.
90044452022-10-17. Service bulletin. POWER TRAIN. Transfer Case Shift Lever Design Change
S18210000012022-09-26. Service bulletin. POWER TRAIN. Gear Ratio DTC?s, Transmission Shift Concerns, Does Not Shift At Times, Shudders
90040092022-09-26. Service bulletin. POWER TRAIN. Transmission Kit with Torque Converter 1. All Promaster (VF) 3.6L/62TE equipped vehicles. If the transmission bracket to the transmission case fasteners are removed during servicing, the fasteners (Part Number 06511385A$) are one-time usage. Vehicles built prior to 10/23/2015 requires Service Kit PN 68461214AA; includes Transmission Isolator PN 68264483AA, and Adaptation Bracket 68264479AA and Fastener Service Kit PN 68329056AA Vehicles built after on or after 10/23/2015 will require only the Fastener Service Kit PN 68329056AA. 2. All 3.6L/62TE equipped vehicles. If the vehicle you are repairing has a crack in the flex plate or failed pump bushing inspect and confirm that both (2) dowel pins are present in the engine block, which align the transmission center line to the crank shaft centerline and visually inspect the dowel alignment holes in the transmission case. If the holes are damaged or elongated the transmission should be replaced to prevent further damage to the transmission/flexplate or pump bushing due to the inability to properly align the engine to the transmission during the repair. 3. All 62TE equipped vehicles. If pump bushing is scored or damaged and the dowel pin alignment holes are ok, replace the pump assembly as opposed to complete transmission. 4. All 62TE equipped vehicles. If vehicle is jerking/slipping with MIL code(s) P0740 or P2764, check TCC Solenoid operation. If TCC Solenoid is ok, the codes are indicative of a torque converter failure. Replace the torque converter.
S21210000032022-09-26. Service bulletin. POWER TRAIN. Transfer Case Gear Motor/Actuator Installation Guidelines.
90043502022-09-26. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. GEAR MOTOR, Transfer Case The gear motor assembly is shipped in AWD/2WD position. The transfer case needs to be positioned in AWD/2WD position to properly assemble gear motor to T-Case. Please reference Star Online publication S2121000003 for further details. Do not have the transfer case in in another position other than AWD/2WD and rotate the motor to align the bolt holes as this could result in damage to the gear motor.
N260606132022-09-26. Service bulletin. POWER TRAIN; AIR BAGS. New Safety Recall Advanced Communication ? N26060613 Chrysler Group LLC (Chrysler) announced a safety recall on certain 2012 model year (DP) 4500/5500 series RAM 4x4 Trucks. Some of the above trucks may have a front axle with improper axle tube-to-differential housing welds. If the axle tube welds fail, the front axle differential housing could rotate relative to the axle tubes. This could cause the front propeller shaft to bind up or fracture the front propeller shaft universal joint. Chrysler will conduct a voluntary safety recall on all involved vehicles to either replace the front axle or install an axle brace to prevent differential housing rotation. Dealers will be notified of the launch of this safety recall by way of established methods used in the past. We ask that you please take the time to ensure that your personnel are aware of this communication and are prepared to execute a customer friendly process for inquiries on involved vehicles.
90044122022-08-22. Service bulletin. POWER TRAIN:CLUTCH ASSEMBLY:MASTER CYLINDER; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER. MASTER CYLINDER, Brake A new master cylinder reservoir has been made available that is backward compatible but not interchangeable with old parts as follows: 68144489AA MASTER CYLINDER (OLD) or 68144492AA RESERVOIR (OLD) should be replaced with 68285796AA MASTER CYLINDER AND 68285797AA RESERVOIR (NEW) in pairs and not individually.
90017622022-08-22. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Part Description: Thermostat, Engine Issue Description: Important! There has been an application change to the Cummins turbo diesel thermostat. When replacing a thermostat confirm the correct replacement is choosen.~ 2010, 2011, and 2012 RAM Trucks 2500/3500/4500/5500 engine coolant operating temperature has been increased to 200 degrees requiring thermostat 68067109AA.~ 2009, 2013, and 2014 RAM Trucks 2500/3500/4500/5500 engine coolant operating temperature is 190 degrees requiring thermostat 68005464AA.~ These thermostats are not interchangeable and doing so will result in reduced engine performance.
N08020720132022-07-25. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. Advanced Field Action Communication ? N0802072013 Chrysler Group LLC (Chrysler) announced a safety recall on certain 2009 through 2012 model year: (DS) Ram Truck (ND) Dodge Dakota (HB) Dodge Durango (HG) Chrysler Aspen NOTE: All of the above involved vehicles are equipped with a Chrysler 9.25? rear axle (sales code DRB) or C235 rear axle (sales code DRN). The above vehicles may have been built with a rear axle pinion nut that can loosen, which could result in the rear axle locking up. This could cause a loss of vehicle control and/or a crash with little warning. Chrysler will conduct a voluntary safety recall on all affected vehicles to install a rear axle pinion nut retainer. Dealers will be notified of the launch of this safety recall by way of established methods used in the past.
25-004-122022-07-25. Service bulletin. BACK OVER PREVENTION; POWER TRAIN; EXTERIOR LIGHTING; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Malfunction Indicator Lamp Illumination Due To Oxygen Sensor This bulletin involves replacement of the Oxygen Sensor Connectors for any Oxygen Sensor related DTC. Do NOT replace any parts prior to performing this bulletin and the Verifications test below. If the vehicle has any of the following DTC?s for O2 Sensors, Stored, Pending or Active, perform the Repair Procedure. ? P013A O2 Sensor 1/2 Slow Response - Rich To Lean (Soot related code, see note) ? P013B O2 Sensor 1/2 Slow Response - Lean To Rich (Soot related code, see note) ? P014C O2 Sensor 1/1 Slow Response - Rich To Lean (Soot related code, see note) ? P014D O2 Sensor 1/1 Slow Response - Lean To Rich (Soot related code, see note) ? P0030 O2 Sensor 1/1 Heater Circuit ? P0031 O2 Sensor 1/1 Heater Circuit Low ? P0032 O2 Sensor 1/1 Heater Circuit High ? P0036 O2 Sensor 1/2 Heater Circuit Malfunction ? P0037 O2 Sensor Heater Circuit Low 1/2 ? P0038 O2 Sensor Heater Circuit High 1/2 ? P0053 O2 Sensor Heater 1/1 Resistance ? P0054 O2 Sensor Heater 1/2 Resistance ? P064D Internal Control Module 02 Sensors Processor Performance - Bank 1 ? P0131 1/1 02 Sensor Shorted To Ground ? P0132 1/1 02 Sensor Shorted To Voltage ? P0135 O2 Sensor 1/1 Heater Performance ? P0137 1/2 02 Sensor Shorted To Ground ? P0138 1/2 02 Sensor Shorted To Voltage ? P0141 O2 Sensor 1/2 Heater Performance ? P113C O2 Sensor Power Supply Circuit Performance ? P2195 O2 Sensor 1/1 Out Of Range High ? P2196 O2 Sensor 1/1 Out Of Range Low ? P22AB O2 Sensor Positive Current Control Circuit/Open - Bank 1 Sensor 2 ? P22AE O2 Sensor Reference Voltage Circuit/Open - Bank 1 Sensor 2 ? P22B2 O2 Sensor Negative Current Control Circuit/Open - Bank 1 ? P22B5 O2 Sensor 1/2 Pump Cell Current Trim Circuit Open ? P2237 O2 Sensor 1/1 Pump Cell Current Circuit Low ? P2243 O2 Sensor 1/1 Reference Voltage Circuit Open ? P2251 O2 Sensor 1/1 Negative Current Control Circuit/Open ? P2270 O2 Sensor 1/2 Out Of R
18-012-132022-07-25. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; ENGINE. FLASH: Diagnostic and System Enhancements This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM) with new software. Cab chassis trucks equipped with a 6.7L Cummins diesel have a number of software improvements available. This latest Service Bulletin (SB) will include:Improvements To Prevent Unnecessary Malfunction Indicator Lamp (MIL) Illumination For: P061A - ETC LEVEL 2 TORQUE PERFORMANCE P229F - AFTERTREATMENT NOx SENSOR CIRCUIT PERFORMANCE - BANK 1 SENSOR 2 P2453 - DIESEL PARTICULATE FILTER PRESSURE SENSOR A CIRCUIT PERFORMANCE P2609 - INTAKE AIR HEATER SYSTEM PERFORMANCE P1123 - POWER TAKE OFF SYSTEM MONITOR CONTROL ERROR U010E - LOST COMMUNICATION WITH DIESEL EXHAUST FLUID CONTROL UNIT U059F - INVALID DATA RECEIVED FROM NOx SENSOR "B" P20EE - SCR NOx CATALYST EFFICIENCY BELOW THRESHOLD - BANK 1; for DTC's set at highway speed and/or high load drive cycles Vehicles with DTC P20EE set in conditions other than highway speed and/or high load drive cycles should have normal diagnostics performed Enhanced Diagnostics For: Selective Catalyst Reduction (SCR) efficiency diagnostic improvements.Other Updates: Too frequent regeneration readiness improvement Correct CAC out voltage in WiTech Add ability to read EMP sensor value in WiTech Enable EMP deicing algorithm Display correct crankcase pressure in WiTech Display correct EGR position in WiTech Improve idle shutdown messages - extra message removed Display correct alternator voltage in WiTech Idle shutdown message on EVIC. Turbo protection feature (Not displayed if vehicle is in park or no vehicle speed). Limits RPM at cold ambient to prevent turbo damage. Scan tool display updates. Correct operation of remote PTO. System robustness improvements.
S21210000032021-04-26. Service bulletin. POWER TRAIN. Transfer Case Gear Motor/Actuator Installation Guidelines.
16-001-132021-03-29. Service bulletin. POWER TRAIN. Driveline Vibration This bulletin involves inspecting for a correct drive shaft center support bearing bracket and replacing the bracket if the bracket is incorrect. A small number of vehicles were built with an incorrect drive shaft center support bearing bracket. The bracket on these vehicles may have an incorrect height which could allow the drive shaft to operate at an angle that could cause the driveline to vibrate while the vehicle is in motion.
18-001-132021-03-29. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL; BACK OVER PREVENTION; POWER TRAIN; ELECTRICAL SYSTEM; SERVICE BRAKES. Flash: Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM) with new software. Pickup trucks equipped with a 6.7L Cummins diesel have software improvements/enhancements available for the following DTC's: P049D - EGR CONTROL POSITION EXCEEDED LEARNING LIMIT P0101 - MASS AIR FLOW SENSOR "A" CIRCUIT PERFORMANCE P0191 - FUEL RAIL PRESSURE SENSOR CIRCUIT PERFORMANCE P2000 - NOx ABSORBER EFFICIENCY BELOW THRESHOLD (Diagnostic improvements) P2002 - DIESEL PARTICULATE FILTER EFFICIENCY BELOW THRESHOLD (for high altitude failures) P2195 - O2 SENSOR 1/1 OUT OF RANGE HIGH P2196 - O2 SENSOR 1/1 OUT OF RANGE LOW P2270 - O2 SENSOR 1/2 OUT OF RANGE HIGH P2271 - O2 SENSOR 1/2 OUT OF RANGE LOW P241A - O2 SENSOR 1/1 AND 1/2 OXYGEN CONCENTRATION MISMATCH P242F - DIESEL PARTICULATE FILTER RESTRICTION - ASH ACCUMULATION P2453 - DIESEL PARTICULATE FILTER PRESSURE SENSOR A CIRCUIT PERFORMANCE P2609 - INTAKE AIR HEATER SYSTEM PERFORMANCEVehicles flashed to address the above codes should be driven and repair validated. If code(s) return, follow diagnostic procedures available in DealerCONNECT/TechCONNECT.Improvements other than DTC robustness or enhancements: Improve cruise control functionality Display correct EGR position on WiTech Corrected CAC Outlet temperature voltage reading Display Correct alternator voltage in WiTech Correct for OBD II Readiness for frequent regeneration monitor Correct water in fuel (WIF) parameter to wiTECH ScanTool may report a code as stored, even though the fault has been cleared by completing a significant number of drive cycles without a repeat occurrence Active codes not always displayed correctly Engine derate with IOD removed. This will help prevent turbo damage due to oil thickening in cold climate start up on new vehicles in transit Scan tool readiness reporting issues EGR Valve cleaning and monitoring enhancements to help reduce occurrences of P04
N260606132021-03-22. Service bulletin. AIR BAGS; POWER TRAIN. New Safety Recall Advanced Communication ? N26060613 Chrysler Group LLC (Chrysler) announced a safety recall on certain 2012 model year (DP) 4500/5500 series RAM 4x4 Trucks. Some of the above trucks may have a front axle with improper axle tube-to-differential housing welds. If the axle tube welds fail, the front axle differential housing could rotate relative to the axle tubes. This could cause the front propeller shaft to bind up or fracture the front propeller shaft universal joint. Chrysler will conduct a voluntary safety recall on all involved vehicles to either replace the front axle or install an axle brace to prevent differential housing rotation. Dealers will be notified of the launch of this safety recall by way of established methods used in the past. We ask that you please take the time to ensure that your personnel are aware of this communication and are prepared to execute a customer friendly process for inquiries on involved vehicles.

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