# Service bulletin 18\-005\-23

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: 10231776
- Published by NHTSA: 2023\-02\-13
- Manufacturer's number: 18\-005\-23
- Manufacturer's date: 2023\-01\-12
- NHTSA component: FUEL SYSTEM, GASOLINE; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\); FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM; EXTERIOR LIGHTING

## NHTSA's summary

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: \*\*P0299 \- Turbocharger Underboost.\*\* P026B\-00 \- Injection Timing Performance. P061B\-00 \- Internal Control Module Torque Calculation Performance. P1451\-00 \- Diesel Particulate Filter System Performance. P0755\-00 \- Shift Solenoid ?B? \(DG7 Trans Sales Code\). P0765\-00 \- Shift Solenoid ?D?\(DG7 Only\). P0401\-00 \- EGR System Performance Customers may also experience the following: \*\*Service Exhaust System message in the Electronic Vehicle Information Center \(EVIC\) with no MIL.\*\* Improvements to cold temperature engine rpm fluctuation. Reduce audible engine flare during upshifts \(DG7 Only\). Improvements to help prevent OD clutch premature wear \(DG7 Only\). 1\-2\-1 gear hunting on grades while operating under high loads in areas of low traction \(e.g. rain, snow, ice or dirt\) \(DG7 Only\). wiTECH Fuel System Run\-Up Test routine Improvement. Idle stability Improvement. wiTECH PCM data improvements. wiTECH cylinder cut\-out routine, improvement. This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) with the latest available software.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10231776-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10231776-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Driver assistance, Electrical system, Fuel system, Lighting

## Trouble codes named

P026B, P0299, P0401, P061B, P0755, P0765, P1451

## Vehicles listed

- 2022 RAM 2500
- 2022 RAM 3500

## Recalls for the same vehicles and component

- [24V436000](/recalls/nhtsa/24V436000.md), 2024-06-13: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
- [24V415000](/recalls/nhtsa/24V415000.md), 2024-06-06: SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE; ELECTRONIC STABILITY CONTROL \(ESC\):CONTROL MODULE
- [23V654000](/recalls/nhtsa/23V654000.md), 2023-09-28: BACK OVER PREVENTION:DISPLAY FUNCTION
- [2023026](/recalls/tc/2023026.md), 2023-02-09: Electrical
- [23V060000](/recalls/nhtsa/23V060000.md), 2023-02-09: ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS
- [22V407000](/recalls/nhtsa/22V407000.md), 2022-06-09: BACK OVER PREVENTION:DISPLAY FUNCTION
- [22V140000](/recalls/nhtsa/22V140000.md), 2022-03-10: ELECTRONIC STABILITY CONTROL \(ESC\); SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- [2021629](/recalls/tc/2021629.md), 2021-10-14: Electrical
- [21V798000](/recalls/nhtsa/21V798000.md), 2021-10-14: ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS

## Other bulletins for the same vehicles and component

- [9100901](/bulletins/11037344.md), 2026-09-17, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [113744](/bulletins/11035981.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [113742](/bulletins/11035980.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [08\-291\-26](/bulletins/11035315.md), 2026-07-29, Service bulletin: ELECTRICAL SYSTEM. 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.
- [113069](/bulletins/11034910.md), 2026-07-08, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. SWITCH – HEADLAMP
- [113070](/bulletins/11034909.md), 2026-07-08, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. SWITCH – HEADLAMP
- [S2508000025 REV.A](/bulletins/11034390.md), 2026-07-02, Service bulletin: ELECTRICAL SYSTEM. Instrument Panel Cluster \(IPC\) and Radio Compass Display has Dashes \(\-\-\)
- [S268A000014](/bulletins/11034346.md), 2026-07-02, Service bulletin: ELECTRICAL SYSTEM. Radio/ETM is Adding Approximately 27mA Draw to Vehicle When in Logistics Mode
- [S1623000028 Rev. K](/bulletins/11033975.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [9100835](/bulletins/11033957.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.

JSON: [/v1/bulletins/10231776](/v1/bulletins/10231776)

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