# Service bulletin TSB200115

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: 11036021
- Published by NHTSA: 2026\-08\-07
- Manufacturer's number: TSB200115
- Manufacturer's date: 2026\-07\-02
- NHTSA component: ENGINE

## NHTSA's summary

This Technical Service Bulletin provides instructions to detect the root cause of fuel consumption accuracy issues reported by customers. When comparing fuel consumption values in INSITE™ electronic service tool to customer measurements \(vehicle mileage divided by liters of fuel filled\) the results differ by more than \+/\- 3 percent. The root cause determined by investigations is inaccuracy in measurement performed by the end user. This is an update to the previously submitted communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036021-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036021-9999.pdf)

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

## Components

Engine

## Vehicles listed

- CUMMINS X15

JSON: [/v1/bulletins/11036021](/v1/bulletins/11036021)

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