Service bulletin 18-066-25
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 | 11021023 |
| Published by NHTSA | 2025-07-31 |
| Manufacturer's number | 18-066-25 |
| Manufacturer's date | 2025-07-24 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
Not applicable to vehicles built for US market. 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): ● P0868-00 - Transmission Fluid Pressure Low. ● P0933-00 - Hydraulic Pressure Sensor Range/performance ● P0735-00 - Gear 5 Shift Incorrect Ratio. ● P0729-00 - Gear 6 Shift Incorrect Ratio. Customers may also experience one or more of the following: ● While driving the vehicle, the Instrument Panel Cluster (IPC) is showing a transmission overheat message. ● Check engine light illuminates and will turn on and off while driving. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
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
Trouble codes named
P0729, P0735, P0868, P0933
| RAM 2500 | 2023 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 2023026 | 2023-02-09. Electrical |
|---|---|
| 23V060000 | 2023-02-09. ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS |
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. |
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| 113855 | 2026-08-26. Service bulletin. SWITCH AND BEZEL - FRONT DOOR |
| 113854 | 2026-08-26. Service bulletin. SWITCH AND BEZEL - FRONT DOOR |
| 113744 | 2026-08-06. Service bulletin. SENSOR - TURBOCHARGER SPEED |
| 113742 | 2026-08-06. Service bulletin. SENSOR - TURBOCHARGER SPEED |
| 08-291-26 | 2026-07-29. Service bulletin. R1H UBQ/UEQ Intermittent HVAC Page Lockup Customers may experience one or more of the following: SYMPTOM: ● Intermittently the HVAC page on the Display Screen Module will change temperature and blower speed and then freeze. ● When on the HVAC page, the Display Screen Module may not respond to touch. All other pages operate as intended. |
| 08-272-26 REV. A | 2026-07-23. Service bulletin. Air Handling Performance Test (APT) Availability In wiTECH Technicians may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0234-00 - Turbocharger Overboost Condition. ● P0299-00 - Turbocharger Underboost. ● P0101-00 - Mass Air Flow Sensor "A" Circuit Performance. ● P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1. ● P24A4-00 - Particulate Filter Restriction - Soot Accumulation Too High. ● P2262-00 - Turbocharger Boost Pressure Not Detected - Mechanical. ● P0471-00 - Exhaust Pressure Sensor 1 Performance. ● P1451-00 - Diesel Particulate Filter System Performance. ● P2457-00 - Exhaust Gas Recirculation Cooling System Performance. ● P2263-00 - Turbo Boost System Performance. ● P2459-00 - Diesel Particulate Filter Regeneration Too Frequent. ● P24A2-00 - Diesel Particulate Filter Regeneration Incomplete - Bank 1. ● P0401-00 - EGR System Performance. ● P0402-00 - EGR Flow Excessive Detected. |
| 9100803 Rev 3 | 2026-07-18. Service bulletin. Front Fog Lamp RT 1) If the lamp contains moisture, do not replace it immediately. Turn the fog lamp on for one hour and inspect it afterward. Refer to 23-008-25 Rev.A. Exterior Front Lamps Condensation Clearing Procedure for details. 2) If the fog lamp(s) do not light. Refer to Star Online Publication S2523000085 for details. |
| 08-272-26 | 2026-07-18. Service bulletin. Air Handling Performance Test (APT) Availability In wiTECH Technicians may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0234-00 - Turbocharger Overboost Condition. ● P0299-00 - Turbocharger Underboost. ● P0101-00 - Mass Air Flow Sensor "A" Circuit Performance. ● P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1. ● P24A4-00 - Particulate Filter Restriction - Soot Accumulation Too High. ● P2262-00 - Turbocharger Boost Pressure Not Detected - Mechanical. ● P0471-00 - Exhaust Pressure Sensor 1 Performance. ● P1451-00 - Diesel Particulate Filter System Performance. ● P2457-00 - Exhaust Gas Recirculation Cooling System Performance. ● P2263-00 - Turbo Boost System Performance. ● P2459-00 - Diesel Particulate Filter Regeneration Too Frequent. ● P24A2-00 - Diesel Particulate Filter Regeneration Incomplete - Bank 1. ● P0401-00 - EGR System Performance. ● P0402-00 - EGR Flow Excessive Detected. |
| S2508000025 REV. B | 2026-07-08. Service bulletin. Instrument Panel Cluster (IPC) and Radio Compass Display has Dashes (--) |