# Service bulletin TSB 25\-2155

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: 11017335
- Published by NHTSA: 2025\-04\-30
- Manufacturer's number: TSB 25\-2155
- Manufacturer's date: 2025\-04\-26
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This article supersedes TSB 24\-2404 and TSB 23\-2126 to change the labor operation from actual time to fixed time. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: \* "Active Air Dam System Fault See Manual" warning message in the instrument panel cluster \(IPC\) \* Diagnostic trouble code \(DTC\) C0604:00 stored in the PCM This may be due to the software level in the powertrain control module \(PCM\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11017335-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11017335-9999.pdf)

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

## Trouble codes named

C0604

## Vehicles listed

- 2021 to 2023 FORD F\-150

JSON: [/v1/bulletins/11017335](/v1/bulletins/11017335)

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