# Service bulletin TSB 25\-2071

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: 11015681
- Published by NHTSA: 2025\-03\-18
- Manufacturer's number: TSB 25\-2071
- Manufacturer's date: 2025\-03\-13
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This article supersedes TSB 21\-2405 to update the production fix date. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: \* Illuminated powertrain malfunction indicator \(wrench\) lamp and/or "Shift System Fault" message \* DTC U0103:87 stored in the secondary on board diagnostic module \(SOBDMC\) Some vehicles may also exhibit DTCs U0100:00, U0121, U0140, and/or U0155 stored in the gear shift module \(GSM\). This may be due to the software in the GSM. \*\*\*\*\*Model section: built on or before 30\-Sep\-2021

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11015681-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11015681-9999.pdf)

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

## Trouble codes named

U0100, U0103, U0121, U0140, U0155

## Vehicles listed

- 2021 FORD MUSTANG MACH E

JSON: [/v1/bulletins/11015681](/v1/bulletins/11015681)

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