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Service bulletin SB-10-015

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 id10036966
Published by NHTSA2011-04-25
Manufacturer's numberSB-10-015
Manufacturer's date2010-03-23
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

HONDA: MIL COMES ON WITH DTC P0420 (CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD) IS STORED. ECM/PCM MISINTERPRETS ENGINE IDLE CONDITIONS, RESULTING IN INACCURATE CONTROL OF THE FUEL AND IGNITION. REPLACE CATALYTIC CONVERTER, AND UPDATE THE PGM-FI SOFTWARE WITH HDS. *PE

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, Transmission and driveline, Automatic transmission, Transmission control module

Trouble codes named

P0420

Vehicles listed
HONDA FIT2007, 2008

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