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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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10207902
Published by NHTSA2022-02-11
Manufacturer's numberCB21L001
Manufacturer's date2021-08-27
NHTSA componentFUEL 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

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Fuel system

Trouble codes named

P225C

Vehicles listed
ISUZU F-SERIES2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.