P0299 on the 2021 Ram 4500
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 9100678 | 2025-11-05. Service bulletin. 1. General Parts Update The recommended air filter for 2019 Model Year (MY) and newer 6.7L Cummins equipped vehicles has been updated. New Part: 68645327AA (Non-Oiled Air Filter) Replaces: 53034051AA (Oiled Air Filter) - This part is superseded and should no longer be installed. The air filter for all other applications remains unchanged: Continue to use 68517554AA for: All 2018 MY and older 6.7L Cummins equipped vehicles. All 2019 MY and newer vehicles with non-6.7L engines. 2. Special Service Procedure for DTC P0299 Application: 2019-2024 MY HD Trucks with 6.7L Diesel (ETM/ETN) Condition: If DTC P0299 is active and the vehicle is equipped with the previous oiled air filter (PN# 53034051AA). Procedure: Replace the oiled air filter (53034051AA) with the new non-oiled filter (68645327AA). Service Catalog reflects these updated usages. |
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| 1812722 | 2023-01-17. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module (ECM) / Powertrain Control Module (PCM) with the latest available software. PCM software related to this Technical Service Bulletin (TSB) is included within the Y43 Recall. If not already completed, please perform the Y43 recall if the vehicle is on the recall VIN list. For all other vehicles perform the Repair Procedure below. 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: P0607-00 - ECU Internal Performance. P0299-00 - Turbocharger Underboost. P1451-00 - Diesel Particulate Filter System Performance. The following improvements are also included in this update: Idle stability improvement. Fuel system run-up test routine, wiTECH improvement. Aftertreatment system performance test routine, wiTECH improvement. Power Take Off (PTO) system improvements. Enabling Estop for split shaft PTO systems. Oil pressure switch modifications. Urea (DEF fluid) level sensor calibration update, to help prevent bumps in DEF level gauge. |
| 1812722 | 2022-10-17. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module (ECM) / Powertrain Control Module (PCM) with the latest available software. PCM software related to this Technical Service Bulletin (TSB) is included within the Y43 Recall. If not already completed, please perform the Y43 recall if the vehicle is on the recall VIN list. For all other vehicles perform the Repair Procedure below. 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: P0607-00 - ECU Internal Performance. P0299-00 - Turbocharger Underboost. P1451-00 - Diesel Particulate Filter System Performance. The following improvements are also included in this update: Idle stability improvement. Fuel system run-up test routine, wiTECH improvement. Aftertreatment system performance test routine, wiTECH improvement. Power Take Off (PTO) system improvements. Enabling Estop for split shaft PTO systems. Oil pressure switch modifications. Urea (DEF fluid) level sensor calibration update, to help prevent bumps in DEF level gauge. |
| 18-072-21 | 2022-08-22. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module (ECM) / Powertrain Control Module (PCM) with the latest available software. 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: P0607-00 - ECU Internal Performance. P0299-00 - Turbocharger Underboost. P1451-00 - Diesel Particulate Filter System Performance. The following improvements are also included in this update: Oil pressure switch modifications. Urea (DEF fliud) level sensor calibration update, to help prevent bumps in DEF level gauge. |
4 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.