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Service bulletin 03031

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 id10003479
Published by NHTSA2003-10-22
Manufacturer's number03031
Manufacturer's date2003-07-08
Replaces03031
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

NHTSA's summary

MALFUNCTION INDICATOR LAMP COMES ON WITH DIAGNOSTIC TROUBLE CODE P0420 (CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD). *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Exhaust and emissions, Catalytic converter

Trouble codes named

P0420

Vehicles listed
HONDA ELEMENT2003

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

Other bulletins for the same vehicles and component
030312003-08-14. Service bulletin. MALFUNCTION INDICATOR LAMP ON AND DIAGNOSTIC TROUBLE CODE P0420 (CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD) IS SET. *TT