Service bulletin TSB260026

Manufacturer communication, from NHTSA Manufacturer Communications

Published by NHTSA: Sep 4, 2026
Manufacturer: CUMMINS
NHTSA ID: 11037037
NHTSA category: Service Bulletin/Repair Instructions
Applies to, as stated by NHTSA: CUMMINS BES (model year not stated)
Component, as stated by NHTSA: FUEL/PROPULSION SYSTEM

Text of the manufacturer communication

This Technical Service Bulletin describes the verification and resolution steps for datalink 3 which may experience excessive interference, resulting in communication issues for components on the network and the possibility of fault codes 11938, 11939, 11941, 11943, 11949, 14523, 14524, and 14525 being set. This is an update to a previously submitted communication.

Manufacturer document number: TSB260026
Date of the communication: 2026-08-05

View original source on NHTSA.gov

NHTSA reuses some ID numbers across record types. If its page lists more than one record, this one is the manufacturer communication dated Sep 4, 2026.

For the 2019 Ram 2500

Laramie Crew Cab

Ignored

Relevance of 37% is under one half, so the notice is ignored whatever the other figures say.

Vehicle relevance: 37%
Attention: 58%
Interrupt probability: 43%

Importance to this owner: 2.3 of 4, worth knowing
Vehicle area the notice is about: Engine

This manufacturer communication does not appear to warrant attention for this vehicle.

Decided by jev-1.13.0 in 173 ms from 1,636 input tokens. Jev returns these figures and nothing else. It gives no reasons, and none are written for it here. The figures describe how relevant the notice is, not the condition of any vehicle.

Checked by code against NHTSA's fields

A plain comparison with the structured fields NHTSA filled in. Separate from Jev's decision.

NoNHTSA names this make
NoNHTSA names this model
n/aNHTSA lists model year 2019 for this model

The same notice, every vehicle

Relevance	Attention	Interrupt	State
37%	58%	43%	Ignored
8%	26%	22%	Ignored
5%	18%	18%	Ignored
4%	11%	12%	Ignored
3%	9%	11%	Ignored
3%	14%	16%	Ignored
3%	11%	12%	Ignored
3%	9%	9%	Ignored
3%	10%	10%	Ignored
2%	7%	8%	Ignored
2%	6%	7%	Ignored
2%	6%	8%	Ignored
2%	6%	7%	Ignored
2%	7%	9%	Ignored
2%	6%	7%	Ignored
2%	8%	9%	Ignored

Select a vehicle to see its attention and interrupt figures above.