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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

Only bulletins with component: Driver assistance are shown. Show all

Bulletins, newest first
S21080000222022-07-18. Service bulletin. LANE DEPARTURE; TRAILER HITCHES. Service Trailer Brake Warning Message Displayed On The Cluster
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
S2108000003 Rev.2022-07-18. Service bulletin. WHEELS; LANE DEPARTURE; STEERING; TRAILER HITCHES; VISIBILITY. Cluster Displays Blind Spot Alert Off Incompatible Trailer Message, Left Steering Wheel Switches Do Not Allow Update Or Change
S21080000032022-07-18. Service bulletin. VISIBILITY; EQUIPMENT ADAPTIVE/MOBILITY; WHEELS; STEERING; ELECTRICAL SYSTEM:ADAS:BLINDSPOT:SENSORS. Cluster Displays Blind Spot Alert Off Incompatible Trailer Message, Left Steering Wheel Switches Do Not Allow Update Or Change
S21080000222022-05-31. Service bulletin. LANE DEPARTURE; TRAILER HITCHES. Service Trailer Brake Warning Message Displayed On The Cluster
S21180000042021-05-24. Service bulletin. BACK OVER PREVENTION; EXTERIOR LIGHTING. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P225D ? NOX Sensor 1/1 Performance, Signal Stuck Low And/Or P225C ? NOX Sensor 1/1 Performance, Signal Stuck High, Set.
S21080000632021-05-24. Service bulletin. LANE DEPARTURE. Crank No Start, Cluster Warning Lamps Flash On And Remain On At Start Up, Wipers Turn On Stay On
S21180000032021-05-24. Service bulletin. ELECTRICAL SYSTEM; BACK OVER PREVENTION; SERVICE BRAKES; EXTERIOR LIGHTING. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P051B ? Crankcase Pressure Sensor Circuit Performance, and/or P04DB ? Crankcase Ventilation System Disconnected, Set After Powertrain Control Module (PCM) Replacement
S21080000932021-05-24. Service bulletin. BACK OVER PREVENTION:DISPLAY FUNCTION; EQUIPMENT. Apple CarPlay Does Not Work Or Not Connecting
S1808000097 Rev.2021-04-26. Service bulletin. BACK OVER PREVENTION. Back Up Camera Inoperative Complaints, Radio Display Blue Or Blank When Placed In Reverse
90040172021-04-26. Service bulletin. BACK OVER PREVENTION. CAMERA, Rear View For concerns of back up camera flicker/blank/blue/black screen or camera inop, please ensure Radio is at latest software level. After update, system requires three sleep cycles to function properly. Please verify camera LVDS- Low-Voltage Differential Signaling cable connection at camera and radio head unit. Also verify harness connection between high mounted stop lamp and body harness for bent pins or loose connection at XY310A, XY485A inlines. Please create and send a copy of the vehicle scan report and specify radio SW version and radio head unit ID toFCA Redacted Content or call FCA Redacted Content for any additional questions or assistance needed. If no response in 15 minutes, proceed with repair. Please be sure to attach a copy of the Vehicle Scan Report on the repair order.
S21080000392021-03-15. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM. Back Up Camera Inoperative Complaints, Radio Display Blue Or Blank When Placed In Reverse
S20080001922021-03-01. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); ELECTRICAL SYSTEM. Check Engine Light (CEL) On, Electronic Stability Control (ESC) Indicator Light Illuminated, DTC?s C0042-28, P057B
90043372021-03-01. Service bulletin. STRUCTURE:BODY:DOOR:HANDLE:EXTERIOR; ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR; BACK OVER PREVENTION; STRUCTURE:BODY:TAILGATE. HANDLE, Tailgate For issues related to tailgate handle camera do not replace tailgate handle, the camera is serviceable and can be ordered through MOPAR separately as follows: 2019 - 68144068A$ 2020 - 68414414A$, 68144068A$ 2021 - 04672850A$
08-014-212021-02-16. Service bulletin. AIR BAGS; EXTERIOR LIGHTING; BACK OVER PREVENTION; ENGINE AND ENGINE COOLING. 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.
S21080000032021-02-16. Service bulletin. LANE DEPARTURE; STEERING. Cluster Displays Blind Spot Alert Off Incompatible Trailer Message, Left Steering Wheel Switches Do Not Allow Update Or Change
08-082-202020-10-26. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE; ELECTRICAL SYSTEM; SERVICE BRAKES. Flash: Park Assist Module (PAM) Enhancement This bulletin involves updating the PAM software with the latest available software. Customers may experience an Electronic Vehicle Information Center (EVIC) message. These DTCs may be setting erroneously and this software enhancement will remove these DTCs. Upon further investigation the technician may find that one or more of the following DTCs have beenset:The following DTCs apply to 2019 model year vehicles only.B128E-25 - PTS Sensor 1-Signal Shape/Waveform Failure. B128F-25 - PTS Sensor 2-Signal Shape/Waveform Failure. B1290-25 - PTS Sensor 3-Signal Shape/Waveform Failure. B1291-25 - PTS Sensor 4-Signal Shape/Waveform Failure. B1292-25 - PTS Sensor 5-Signal Shape/Waveform Failure. B1293-25 - PTS Sensor 6-Signal Shape/Waveform Failure. B1295-25 - PTS Sensor 8-Signal Shape/Waveform Failure. B1296-25 - PTS Sensor 9-Signal Shape/Waveform Failure. B1297-25 - PTS Sensor 10-Signal Shape/Waveform Failure. B1298-25 - PTS Sensor 11-Signal Shape/Waveform Failure. B1299-25 - PTS Sensor 12-Signal Shape/Waveform Failure. Customers may experience the following:False detection by the front sensors due to locking onto random moving objects or while coming to a stop when braking hard. When backing up, the park assist feature will apply the brakes when noobject is behind the vehicle.
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
S20080000422020-05-26. Service bulletin. BACK OVER PREVENTION; BACK OVER PREVENTION: CAMERA SYSTEM. Radio Display Is Black After Replacing The Rear View Camera
90040122020-05-18. Service bulletin. AIR BAGS; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); VEHICLE SPEED CONTROL; SEATS. Power Latch W/AJAR Prior to ordering this part for a customer stating the Tailgate will not auto release or Ajar light is on when the tailgate is closed, first try adjusting the tailgate strikers to minimize the force required to close. The striker must be centered up/down in the latch opening. You have to balance tailgate flushness and closing effort by moving the strikers fore or aft. Striker position also affects closing effort. In most cases moving the right side striker rearward or the left side forward fixes the issue and maintains flushness within tolerance. On the standard tailgate, the ajar switch is on the right side latch only. Please contact FCA Redacted Content for diagnostic assistance and information to assist in problem resolution. If no response in 15 minutes, proceed with repair.
S20240000032020-04-27. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; BACK OVER PREVENTION. Customer Indicates A Whistle Noise From Dash During Certain Driving Parameters.
S20250000012020-04-27. Service bulletin. EXTERIOR LIGHTING; BACK OVER PREVENTION. Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
S20080000152020-04-06. Service bulletin. ELECTRICAL SYSTEM; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). Electronic Stability Control (ESC) Indicator Light Illuminated, DTC?s U1440, U0403 And No (DTCM) Drive Train Control Module Codes Present
90040052019-12-16. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:SOFTWARE; BACK OVER PREVENTION: SENSING SYSTEM: CAMERA. CAMERA (Rear) For concerns of back up camera flicker/blank/blue/black screen or camera inop, please ensure Radio is at latest software level. After update, system requires three sleep cycles to function properly. Please verify camera LVDS cable connection at camera and radio head unit. Also verify harness connection between chassis, body, and IP harness for bent pins or loose connection at XY400A, XY306A, XY552A. Please create and send a copy of the vehicle scan report and specify radio SW version and radio head unit ID to Bing Guo and Rafay Adil via email bingruo.guo@fcagroup.com (248) 500-7355 rafay.adil@fcagroup.com (248) 736-7059 Please call for any additional questions or assistance needed. If no response in 15 minutes, proceed with repair. Please be sure to attach a copy of the Vehicle Scan Report on the repair order.
549662019-07-15. Service bulletin. LANE DEPARTURE: LANE KEEP: STEERING ASSIST. Module-Parking Assist

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