ISUZU

SB21J001

2021-06-01 · NHTSA 10200124

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

An investigation of returned fuel injectors has shown that injectors are being unnecessarily replaced. We have identified a common occurrence of an illuminated Malfunction Indication Light (MIL) with DTC P0172 Fuel Trim System Rich set in the Engine Control Module (ECM). Through the analysis of returned injectors, we have determined the injectors were not the cause of this DTC setting. This DTC may be resolved by reprogramming the ECM with the 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.