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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: Brakes are shown. Show all

Bulletins, newest first
S21080001702022-09-26. Service bulletin. PARKING BRAKE. Head unit button stuck DTC code B14DA-2A
S2108000060RevB2022-09-26. Service bulletin. PARKING BRAKE. Service Park Assist Message Or Rear Park Assist Unavailable Message Displaying On The Cluster
S21080000812022-09-26. Service bulletin. PARKING BRAKE. Electronic Parking Brake (EPB) DTC?s Setting For Opposite Side of vehicle. EPB Circuits Swapped
18008212022-09-26. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM; BACK OVER PREVENTION; EXTERIOR LIGHTING; FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the followingDiagnostic Trouble Codes (DTCs) have been set:Change DTC number from P0101-00 to P0109-00 - Mass Air Flow Sensor Performance. P015E - Excessive Time to Enter Closed Loop Fuel Timing Control. P0534-00 - AC Refrigerant System A Charge Loss. P26FB-00 - EGR Cooler Bypass Control Stuck Closed Bank 1. P04DB-00 - Crankcase Ventilation System Disconnected. P204F-00 - Reductant System Performance. P200A-00 - Intake Manifold Runner Performance - Bank 1. P200B-00 - Intake Manifold Runner Performance - Bank 2. P2D2D-00 - Cold Start Intake Manifold Runner Performance Bank 1. P2D2E-00 - Cold Start Intake Manifold Runner Performance Bank 2. P2199-00 - Intake Air Temperature Sensor 1 / 2 Correlation. P22FA-00 - NOX Sensor Performance - Slow Response High To Low Bank 1 Sensor 1. P2002-00 - Diesel Particulate Filter Efficiency Below Threshold. P0087-00 - Fuel Rail Pressure Too Low. P0128-00 - Thermostat Rationality(additional software enhancement). P0300-00 - Multiple Cylinder Misfire(cold ambient temperature). P0301-00 - Cylinder 1 Misfire(cold ambient temperature). P0302-00 - Cylinder 2 Misfire(cold ambient temperature). P0303-00 - Cylinder 3 Misfire(cold ambient temperature). P0304-00 - Cylinder 4 Misfire(cold ambient temperature). P0305-00 - Cylinder 5 Misfire(cold ambient temperature). P0306-00 - Cylinder 6 Misfire (cold ambient temperature). P01CB-00 - Cylinder 1 Injection Timing Performance - Over Retarded. P01CC-00 - Cylinder 1 Injection Timing Performance - Over Advanced. P01CD-00 - Cylinder 2 Injection Timing Performance - Over Retarded. P01CE-00 - Cylinder 2 Injection Timing Performance - Over Advanced. P01CF-00 - Cylinder 3 Injection Timing Performance - Over Retarded.
05001192022-09-15. Service bulletin. SERVICE BRAKES. Rear Brake Noise This bulletin involves replacing the rear caliper adapters, guide pins and brakepads. The customer may comment on the following:A high pitch ?squeal? originating from the rear brakes,often occurring in cold, humid weather and when driving in reverse, after the vehicle has been sitting for at least a few hours. Veryoften, the noise can be heard in the morning, when backing out of a driveway.
90040052022-09-15. Service bulletin. PARKING BRAKE; BACK OVER PREVENTION. 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.
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.
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.
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.
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
08-041-212021-04-26. Service bulletin. PARKING BRAKE; STRUCTURE; ELECTRICAL SYSTEM. Flash: Body Control Module (BCM) Updates This bulletin involves updating the BCM with the latest available software. Customer may comment that after pressing the remote start button twice on the key FOB, vehicle will chirp once, and fail to initiate remote start.This issue may be accompanied by a low voltage remote start inhibit monitor.
S21080000812021-04-26. Service bulletin. PARKING BRAKE. Electronic Parking Brake (EPB) DTC?s Setting For Opposite Side of vehicle. EPB Circuits Swapped
90043432021-02-16. Service bulletin. SERVICE BRAKES, HYDRAULIC. VALVE, HIGH PRESSURE EGR If you are replacing the high pressure EGR valve (68490212A$) due to DTC P0407 or P0408 please refer to all published service information regarding proper diagnosis before proceeding. These DTCs are for the low pressure EGR system.
05-004-202020-12-28. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; SERVICE BRAKES. Rear Brake (Moan) Noise This bulletin involves installing a rear brake anti-moan kit. The customer may comment on the following: A low frequency moan or howl noise from the rear brakes, primarily in cold/humid conditions, typically on the first brake stop in forward or reverse, after vehicle has been sitting for lengthy periods of time (cold brakes).
05-003-202020-12-28. Service bulletin. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES. Brake Pedal with Booster Service This bulletin is informing the technician that when servicing the brake pedal or the brake booster both components need to be serviced together.
S1925000008 Rev.2020-12-28. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES; FUEL SYSTEM, GASOLINE. (Rev. B) Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P20E8 ? Reductant Pressure Too Low and/or P208B ? Reductant Pump 1 Control Performance Set.
05-004-202020-12-21. Service bulletin. SERVICE BRAKES; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Rear Brake (Moan) Noise This bulletin involves installing a rear brake anti-moan kit. The customer may comment on the following:A low frequency moan or howl noise from the rear brakes, primarily in cold/humid conditions, typically on the first brake stop in forward or reverse, after vehicle has been sitting for lengthy periods of time (cold brakes).
05-003-202020-12-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES; EQUIPMENT. Brake Pedal with Booster Service This bulletin is informing the technician that when servicing the brake pedal or the brake booster both components need to be serviced together.
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.
S20080000522020-05-26. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM. Service Trailer Brake Warning Message Displayed On The Cluster
90039502020-05-18. Service bulletin. PARKING BRAKE. Tailgate Cable 1. If replacing this cable for slack or loose on one side; first swap the cables left to right; does the issue follow the cable? a). If Yes, replace cable with slack. b). If No, a new shorter service cable PN 68488335A$ will resolve the issue if slack is greater than 18 mm of sag when compared to a straight edge from both ends of the cable. 2. If the issue improves following the left to right swap no further repair needed.
90042342020-05-18. Service bulletin. PARKING BRAKE; STRUCTURE. COVER, Front Seat Cushion For a seat cover that is loose at the seat frame attachment clips, please perform TSB 23-025-19 Seat cover replacement is not required
05-001-19 REV. B2019-12-16. Service bulletin. SERVICE BRAKES. Rear Brake Noise This bulletin involves replacing the rear caliper adapters, guide pins and brakepads. The customer may comment on the following:A high pitch ?squeal? originating from the rear brakes,often occurring in cold, humid weather and when driving in reverse, after the vehicle has been sitting for at least a few hours. Veryoften, the noise can be heard in the morning, when backing out of a driveway.
555022019-07-15. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC. PadKit- Front Disc Brake
554882019-07-15. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC. PadKit- Front Disc Brake

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