ISUZU

CB23-L-001

2023-11-03 · NHTSA 10246226

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

IN SOME 2021MY ISUZU F-SERIES VEHICLES, OPERATORS MAY EXPERIENCE AN ILLUMINATED CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) WITH DIAGNOSTIC TROUBLE CODE (DTC) P2201 NOX SENSOR CIRCUIT PERFORMANCE SENSOR 1 AND/OR DTC P20EE DIESEL EXHAUST FLUID (DEF) SYSTEM NOX TRAP LOW EFFICIENCY SET IN THE DEF CONTROL UNIT (DCU). WE HAVE DETERMINED A DCU CALIBRATION ERROR IS CAUSING THIS DTC TO SET. THEREFORE, THIS DTC MAY BE RESOLVED BY REPROGRAMMING THE DCU WITH A REVISED CALIBRATION.

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.