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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
S18180000242022-08-22. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Diesel Fuel Injector Cleaning Procedure
S21080002042022-08-22. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Lockup In The Software Installation Screen After Accepting FOTA Update (Incorrect "S2008000204" indicated on published document)
S21090000102022-08-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION: OIL COOLER. 3.0L Ecodiesel Engine Oil Information
S21080001992022-08-22. Service bulletin. ENGINE AND ENGINE COOLING. Check Engine Light (CEL), Start Stop Disabled, Vehicle Goes Into Limp In Mode
S21080001982022-08-22. Service bulletin. EQUIPMENT:ELECTRICAL. Media Device Connection Guidelines For Bluetooth, Apple CarPlay, Android Auto Or USB To The Radio Head Unit
S16230000282022-08-22. Service bulletin. VISIBILITY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot
S21080001862022-08-22. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY. Power Windows Do Not Operate, Stop Start Inoperative
S21180000132022-08-22. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Customer complaint may include the transmission going into neutral on its own. A Mil-on/check engine lamp-on condition may also be present. Upon further investigation, one or more of the following DTCs may be set in the powertrain control module (PCM): P219A-Bank 1 Air-Fuel Ratio Imbalance P219B-Bank 2 Air-Fuel Ratio Imbalance P2173-High Airflow/Vacuum Leak Detected (Slow Accumulation) P2172-High Airflow/Vacuum Leak Detected (Instantaneous Accumulation) P0172-Fuel System 1/1 Rich P0175-Fuel System 2/1 Rich (Incorrect "July 2021" on document)
90043822022-08-22. Service bulletin. SUSPENSION; SEATS; BACK OVER PREVENTION. BUSHING, Tailgate Pivot For vehicles built after Dec 1 2020 and the tailgate is making a noise when opening or closing or if the bushing is being replaced for any reason please read this note PN 68437489AB is for multifunction tail gate only and PN 68437489AA is needed for standard tail gate only. Also there is a shim PN 68547105AA that can be added in the standard tailgate gate right side pivot cup to address side to side movement. For any other concerns call FCA Redacted Content. If no response in 15 minutes, proceed with repair. Please take pictures of the inside of the pivot cup after plastic bushing removal and pictures of the pivot post on the box side hinge. Email pictures to FCA Redacted Content
90040742022-08-22. Service bulletin. VISIBILITY. MIRROR, Outside Rearview - w/ Memory If the outside rearview mirror is being replaced for concern of "Mirrors tilt in reverse but do not return to the pre-set position after shifting out of reverse gear or continue to tilt downwards even after shifting out of reverse gear". Do not replace the mirror as it will not correct the issue. A software update has been released. Please review TSB 08-116-21 for the repair procedure which would involve reprogramming the DDM and PDM with the latest available software.
23-006-212022-07-18. Service bulletin. EQUIPMENT; STRUCTURE:BODY:TAILGATE:HINGE AND ATTACHMENTS. Tailgate Cable Has Excessive Slack or is Loose This bulletin involves replacing one of the tailgate cables with a new tailgate service cable. The customer may comment on one or more of the following:One tailgate cable has too much slack or is loose. The tailgate cables are different lengths.
08-015-212022-07-18. Service bulletin. BACK OVER PREVENTION:DISPLAY FUNCTION. 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.
08-014-212022-07-18. Service bulletin. ENGINE AND ENGINE COOLING; AIR BAGS; EXTERIOR LIGHTING. Motor Generator Unit (MGU) Connector Not Fully Seated This bulletin involves replacing the MGU. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more ofthe following Diagnostic Trouble Codes (DTCs). U0594 - Implausible Data Received From HCP. P1B03-00 - Resolver Signal / MCPA Rationality. P0A3F-00 - Drive Motor A Position Sensor 1 Circuit. P0607-00 - ECU Internal Performance. P1C64-00 - Hybrid Perf - Engine Speed Below Target During Autostart. P0A92-00 - Hybrid Generator Performance. Customers may also experience the following: The vehicle has 15-40 minutes of driving time before a vehicle stall.The vehicle will be unable to re-start. The vehicle will lose charging of the main 12V battery. A check engine light and/or a low battery light illuminates.
05-001-212022-07-18. Service bulletin. SERVICE BRAKES. Front Brake (Chirp/Squeak) Noise This bulletin involves applying grease to the anti-rattle clips on both sides ofthe front brakes. The customer may comment on the following: A chirp and/or squeak from front of vehicle over bumps when the brakesare not applied.
S2023000005 Rev.2022-07-18. Service bulletin. STRUCTURE:BODY; VISIBILITY:REAR WINDOW WIPER/WASHER:LINKAGES. Water Leak On Sliding Rear Window Or Back Of Cab
S1808000282 Rev.2022-07-18. Service bulletin. ELECTRICAL SYSTEM:INTERIOR LAMPS/BULBS. CEL, Check Engine Lamp On, Idles Rough Or Drivability Concerns
S2108000025 Rev.2022-07-18. Service bulletin. BACK OVER PREVENTION. CEL Check Engine Lamp On, DTC P0158 O2 Sensor 2/2 Circuit High
S21080000252022-07-18. Service bulletin. BACK OVER PREVENTION. CEL Check Engine Lamp On, DTC P0158 O2 Sensor 2/2 Circuit High
S1923000042 Rev.2022-07-18. Service bulletin. SUSPENSION; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); POWER TRAIN. Service Air Suspension System And Power Side Steps Obstructed message With Chime When Power Side Steps Are Obstructed
S21080000222022-07-18. Service bulletin. LANE DEPARTURE; TRAILER HITCHES. Service Trailer Brake Warning Message Displayed On The Cluster
S2018000001 Rev.2022-07-18. Service bulletin. EXTERIOR LIGHTING. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P26FB ? EGR Cooler Bypass Control Stuck Closed Bank 1 Set.
S2025000005 Rev.2022-07-18. Service bulletin. EXTERIOR LIGHTING; BACK OVER PREVENTION. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes P0407 ? EGR Sensor B Circuit Low, or P0408 ? EGR Sensor B Circuit High Set
S21250000012022-07-18. Service bulletin. FUEL SYSTEM, GASOLINE; SERVICE BRAKES; ENGINE AND ENGINE COOLING. High Pressure (HP) Exhaust Gas Recirculation (EGR) Cooler, Perceived Internal Coolant Leak.
S2023000019 Rev.2022-07-18. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS. Noise From Headliner Roof Area
S21090000012022-07-18. Service bulletin. SERVICE BRAKES. 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.

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