# Service bulletin CB21L001

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: 10207902
- Published by NHTSA: 2022\-02\-11
- Manufacturer's number: CB21L001
- Manufacturer's date: 2021\-08\-27
- NHTSA component: FUEL SYSTEM, DIESEL

## NHTSA's summary

Customer Satisfaction Campaign: Reprogram Diesel Exhaust Fluid Control Unit \(DCU\); vehicle may light MIL for DTC P225C in error due to DCU calibration. Reflashing of DCU with updated calibration will resolve this issue.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10207902-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10207902-9999.pdf)

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

## Components

Fuel system

## Trouble codes named

P225C

## Vehicles listed

- 2021 ISUZU F\-SERIES

JSON: [/v1/bulletins/10207902](/v1/bulletins/10207902)

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