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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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10231776
Published by NHTSA2023-02-13
Manufacturer's number18-005-23
Manufacturer's date2023-01-12
NHTSA componentFUEL 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

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

Driver assistance, Electrical system, Fuel system, Lighting

Trouble codes named

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

Vehicles listed
RAM 25002022
RAM 35002022

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
24V4360002024-06-13. BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
24V4150002024-06-06. SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE; ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE
23V6540002023-09-28. BACK OVER PREVENTION:DISPLAY FUNCTION
20230262023-02-09. Electrical
23V0600002023-02-09. ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS
22V4070002022-06-09. BACK OVER PREVENTION:DISPLAY FUNCTION
22V1400002022-03-10. ELECTRONIC STABILITY CONTROL (ESC); SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
20216292021-10-14. Electrical
21V7980002021-10-14. 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.

Other bulletins for the same vehicles and component
91009012026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
1137442026-08-06. Service bulletin. SENSOR - TURBOCHARGER SPEED
1137422026-08-06. Service bulletin. SENSOR - TURBOCHARGER SPEED
08-291-262026-07-29. 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.
1130692026-07-08. Service bulletin. SWITCH – HEADLAMP
1130702026-07-08. Service bulletin. SWITCH – HEADLAMP
S2508000025 REV.A2026-07-02. Service bulletin. Instrument Panel Cluster (IPC) and Radio Compass Display has Dashes (--)
S268A0000142026-07-02. Service bulletin. Radio/ETM is Adding Approximately 27mA Draw to Vehicle When in Logistics Mode
S1623000028 Rev. K2026-06-18. Service bulletin. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
91008352026-06-18. Service bulletin. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.