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Service bulletins for the 2020 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.

1228 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
S20080000102020-08-24. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM. Apple Carplay Inoperative Or Not Working, Phone Not Pairing, Carplay Lockup, Freeze or Audio Concerns
S20250000062020-08-24. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P206D ? Reductant Quality Sensor Circuit High Set.
S20080000952020-08-24. Service bulletin. EQUIPMENT:ELECTRICAL. Service Shifter Is Displayed In the EVIC
90042802020-08-24. Service bulletin. VISIBILITY. GLASS, Mirror Replacement Prior to replacing this part for an outside mirror glass that is missing or not present please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
90042072020-08-24. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; STRUCTURE; EQUIPMENT. AIR DAM, Front, With Actuator (Active Air Dam) Prior to replacing this part, please call FCA Redacted Content. If no response in 15 minutes, proceed with repair.
90037042020-08-24. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; POWER TRAIN. Transmission Oil Pan, Heater (TMU), Tube or O-ring Applies to vehicles equipped with 8 speed transmissions only; if you have a leak that appears to be at the pan the use of proper leak detection is recommended. The fluid in the 8 speeds can be detected with a black light and there are aftermarket spray on leak detection materials to help ensure that the leak is properly diagnosed and not from another location such as cooler lines, heater tubes, or case porosity. Please note that the transmission pan gasket is available for many of the 8 speed applications FCA offers. Please review the available quick connect and transfer tube parts, as replacement of the TMU may not be required. If a TOC line connection is found to be the source, the quick connect may need replacement. If the leak source is coming from the connection of the TMU to the transmission, the transfer tube may need replacement. When parts are returned to the QEC the retaining clips (snap ring) for the quick disconnect fittings are missing. (This leaves a question as to whether the clips were missing from the assembly plant, or the technician removed them in order to make line removal easier.) Please return the clips with the transmission heater and note if they were not there to begin with. For any questions regarding transmission heater, contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
S20080000942020-07-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Uconnect Market Place APP Fatal Error Message
S20080000932020-07-27. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING; ELECTRICAL SYSTEM:ADAS:BLINDSPOT:WARNING:LAMP. Blind Spot Or Park Assist Warnings, False Activation
S20080000902020-07-27. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. The Passenger Exterior Mirror Does Not Auto Dim
S20080000892020-07-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SGW (Security Gateway Module) Setting DTC B235A-00 ECU In-Plant- Mode
S190800000472020-07-27. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR. Volume Uncontrollable Or Stuck On High
S19080001702020-07-27. Service bulletin. ELECTRICAL SYSTEM. Radio Screen Black At Vehicle Startup After A Sleep Cycle
S19080001742020-07-27. Service bulletin. EQUIPMENT:ELECTRICAL. Radio Screen Black At Vehicle Startup After A Sleep Cycle
S19080001022020-07-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Audio Mute On All Sources Except AM
S20230000312020-07-27. Service bulletin. ENGINE AND ENGINE COOLING. Whistle Noise Inside Cab With Window Slightly Lowered
S20080000772020-07-27. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. VP2R Radio Clock Not Keeping Time
S20250000052020-07-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes P0407 ? EGR Sensor B Circuit Low, or P0408 ? EGR Sensor B Circuit High Set
90042072020-07-27. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. AIR DAM, Front, With Actuator (Active Air Dam) Prior to replacing this part, please call FCA Redacted Content. If no response in 15 minutes, proceed with repair.
90042672020-07-27. Service bulletin. FUEL SYSTEM, GASOLINE. FUEL, Tank Please be advised, do not replace fuel tanks with a fuel tank that has a different capacity than the vehicle was equipped with from the factory. Please do not attempt to upfit vehicles at the dealer with increased capacity tanks, they are not compatible.
90042642020-07-27. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. SEAL, Sunroof Prior to replacing this part for a water leak, please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
90042622020-07-27. Service bulletin. STRUCTURE:BODY:TAILGATE; STRUCTURE:BODY:BUMPERS. BUMPER, Tailgate (U-frame) When swing doors are opened on multi-function tailgate the overslam bumper sticks to the door and pulls out of the U-frame. If bumper is still stuck to the swing door remove and resecure using Mopar Bond-All Gel PN 04467709AA. It is recommended to apply adhesive to the mounting face of all 4 bumpers and replace any missing bumpers as required. Use adhesive sparingly to avoid squeeze out and follow manufacturers recommendations for surface preparation and cure time.
08-056-202020-06-22. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; ENGINE. Flash: Battery Pack Control Module (BPCM) Updates This bulletin involves reprogramming the BPCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find thefollowing DTCs have been set:If these codes re-occur after the software update then follow published service information.P0A82-00 - Hybrid/EV Cooling Fan 1 Performance/Stuck Off. P0A97-00 - Hybrid/EV Cooling Fan 2 Performance/Stuck Off. P0AC0-00 - Hybrid Battery Pack Current Sensor 1 Circuit Performance(2019MY Only). P1AEC - MCPA HV Battery Voltage Sensor Circuit Performance(2019 MY Only). If DTCs, P0AA1-00 - Hybrid Battery Positive Contactor Circuit Stuck Closedand P0AC0-00 - Hybrid Battery Pack Current Sensor 1 Circuit Performance is set together, follow the published service diagnostic informationfor P0AA1-00 before proceeding further with this bulletin(2019 MY Only).If DTC, P0AC0-00 is set without P0AA1-00, proceed with the bulletin(2019 MY Only).
09-008-202020-06-22. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ENGINE. Inspect Hydraulic Belt Tensioner This bulletin involves inspecting the Julian date on the hydraulic belt tensioner for possible replacement. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes (DTCs) have been set:P2BA3-00 - Starter/Generator Mechanical Performance. P0A92-00 -Hybrid Generator Performance. Customers may also experience the following:Dead battery. The accessory drive belt may be slipping or belt noise.
W212020-06-22. Service bulletin. EQUIPMENT; ENGINE. Customer Satisfaction Notification U21 Serpentine Belt Tensioner
S19090000022020-06-22. Service bulletin. EQUIPMENT; ENGINE. Customer complaint may include an overfilled engine crankcase after an oil change.

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