Service bulletins for the 2019 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.
1178 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Manual transmission are shown. Show all
| 1808723 | 2023-10-02. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P0420 - Catalyst System Efficiency Below Threshold Bank 1. ? P0430 - Catalyst System Efficiency Below Threshold Bank 2. This bulletin involves reprogramming the PCM with the latest available software. |
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| 1808823 | 2023-10-02. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set:? P0420 - Catalyst System Efficiency Below Threshold Bank 1. ? P0430 - Catalyst System Efficiency Below Threshold Bank 2. This bulletin involves reprogramming the PCM with the latest available software. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.