P1404 on Ram vehicles
P1404 is named on 7 Ram model years (2017–2024): 16 manufacturer filings and 0 owner reports in NHTSA’s files, across 3500, 2500.
Which Ram model years name P1404
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2020 Ram 3500 | Power Train | 4 | — |
| 2024 Ram 2500 | Not specified | 3 | — |
| 2024 Ram 3500 | Not specified | 3 | — |
| 2017 Ram 2500 | Power Train | 2 | — |
| 2017 Ram 3500 | Power Train | 2 | — |
| 2019 Ram 2500 | Power Train | 1 | — |
| 2019 Ram 3500 | Electrical System | 1 | — |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
Ram filings that name P1404
Source: NHTSA manufacturer communicationsBulletins and campaigns Ram filed with NHTSA whose summary names P1404. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 1808822 Service bulletin2022-04-28 · Exterior Lighting
- Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs have been set: P1404 - EGR Position Sensor Rationality Closed. P2457 - Exhaust Gas Recirculation Cooling Sys
- 1809022 Service bulletin2022-04-28 · Power Train
- Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DiagnosticTrouble Code (DTC) has been set: P1404 - EGR Position Sensor Rationality Closed. In addition, customers may experience
- 1808922 Service bulletin2022-04-28 · Back Over Prevention
- Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the correct software. This vehiclemay have been programmed with incorrect software. The customer may experience Active Noise Control (ANC) system not working. Upon further investigation the technician may find the followingDTCs have been set: P1404 - EGR Position Sensor Rationality Closed. B154F-64
- 09-017-24 Service bulletin2024-07-24 · Unknown Or Other
- "Heavy Duty Exhaust Gas Recirculation (EGR) Valve Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1404 - EGR Position Sensor Rationality Closed This bulletin involves replacing the EGR valve."
- 09-007-25 Service bulletin2025-04-03 · Fuel/Propulsion System
- "Heavy Duty Exhaust Gas Recirculation (EGR) Value Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P1404 - EGR Position Sensor Rationality Closed This bulletin involves replacing the EGR valve."
- 18-004-26 Service bulletin2026-01-27 · Engine
- Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1404 - EGR Close Position Performance. Customers may also comment on one or more of the following: ● Engine tugging. ● Unstable idle. This bulletin involves inspecting and possibly
- 18-040-17 REV. A Service bulletin2017-06-24 · Power Train
- Flash: 6.4L Powertrain Diagnostic and System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. This bulletin fixes all vehicles listed and also contains an optional software path for situations where the customer is specifically complaining of a drone noise, shudder, pulsation, or vibration under light throttle application
- 18-040-17 REV. A Service bulletin2017-06-24 · Power Train — Automatic Transmission — Control Module (Tcm/Pcm/Tecm)
- Flash: 6.4L Powertrain Diagnostic and System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. This bulletin fixes all vehicles listed and also contains an optional software path for situations where the customer is specifically complaining of a drone noise, shudder, pulsation, or vibration under light throttle application
- 1807123 Service bulletin2023-06-03 · 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: ? P1404 - EGR Close Position Performance. ? P0456 - EVAP System Small Leak. NOTE: If DTC P0456 is present use the wiTECH Small Leak Verification t
What P1404 means
Source: SAE J2012 / OBD-IIP1404 is a manufacturer-specific code: the second character is a 1, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
A stored code names the test that failed, never the part that caused it. The record above is what Ram and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs P1404 a known problem on Ram vehicles?
It is a documented one: NHTSA's files hold 16 manufacturer filings and 0 owner reports naming P1404 on 7 Ram model years (2017–2024). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Ram models does P1404 appear on most?
2020 3500 (4 documents), 2024 2500 (3 documents), 2024 3500 (3 documents).
Does P1404 on a Ram mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.