Service bulletin 1804820REVA
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10221864 |
| Published by NHTSA | 2022-09-26 |
| Manufacturer's number | 1804820REVA |
| Manufacturer's date | 2020-08-07 |
| NHTSA component | ELECTRICAL SYSTEM; POWER TRAIN |
NHTSA's summary
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/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:P1D7300 - AGS Performance. P0299-00 - Turbocharger Underboost. P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1. P1451-00 - Diesel Particulate Filter System Performance. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation. P24A5-00 - EGR Cooler Bypass Bank 1 Control Stuck(Sales Code ETM). P20EE-00 - NOx Catalyst Efficiency Below Threshold(Sales Code ETM). P0420-00 - Catalyst System Efficiency Below Threshold Bank 1(Sales Code ETM). P2002-00 - Diesel Particulate Filter Efficiency Below Threshold(Sales Code ETM). P0191-00 - Fuel Rail Pressure Sensor Circuit Performance(Sales Code ETM). P0461-00 - Fuel Level Sensor 1 Performance(Sales Code ETM). P0401-00 - EGR System Performance(Sales Code ETM). P208B-00 - Reductant Pump 1 Control Performance(Sales Code ETM). The customer may also notice one or more of the following:Engine surge felt while driving(Sales Code ETM). Idle Fluctuation. The following improvements are also included in this update:wiTECH ?Fuel Injector Cutoff Test? fix. wiTECH Mass Air Flow (MAF) Sensor data display additional fix. Enabling wiTECH Particulate Matter (PM) Sensor Regeneration Test in PCM ?Misc Functions?. Engine Warmup Protection Improvement to help promote better oil delivery to engine bearings during cold starts. Hydrocarbon Desorption (HCD) Mode operational improvement. HCD mode resumes after key cycle. Engine stumble improvement, during engine warm up(Sales Code ETM). Smoke improvement during highway driving and lower altitudes (sea level)(Sales Code ETM).
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system, Transmission and driveline
Trouble codes named
P0191, P0299, P0401, P0420, P0461, P1451, P1D73, P2002, P208B, P20EE, P242F, P2463, P24A5
| RAM 2500 | 2020 |
|---|---|
| RAM 3500 | 2020 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 2022644 | 2022-11-10. Powertrain |
|---|---|
| 22V835000 | 2022-11-10. POWER TRAIN:AUTOMATIC TRANSMISSION |
| 20V511000 | 2020-08-27. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION; ELECTRICAL SYSTEM:SOFTWARE |
| 2020025 | 2020-01-24. Powertrain |
| 20V043000 | 2020-01-24. POWER TRAIN:AUTOMATIC TRANSMISSION |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| 9100901 | 2026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040. |
|---|---|
| 113744 | 2026-08-06. Service bulletin. SENSOR - TURBOCHARGER SPEED |
| 113742 | 2026-08-06. Service bulletin. SENSOR - TURBOCHARGER SPEED |
| 113069 | 2026-07-08. Service bulletin. SWITCH – HEADLAMP |
| 113070 | 2026-07-08. Service bulletin. SWITCH – HEADLAMP |
| S1623000028 Rev. K | 2026-06-18. Service bulletin. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position. |
| 9100835 | 2026-06-18. Service bulletin. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040. |
| S2623000040 | 2026-06-16. Service bulletin. Passive Entry Exterior Door Handle Inoperative When Touched To Lock And Or Unlock. |
| S1623000028 REV.I | 2026-06-03. Service bulletin. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position. |
| 08-208-26 REV. A | 2026-05-20. Service bulletin. Radio Message "Power Surge On USB Detected" Customers may comment on the following: ● The radio displays the message: “Power surge on USB hub detected” Fig. 1. NOTE: After the message appears, no USB devices function in the hub (no charging, no data). NOTE: Hub operation does not return until the vehicle undergoes a full key cycle. |