HONDA

SB-10-015

Manufacturer communications

Publication date: 2010-03-23
Received by NHTSA: 2011-04-25
NHTSA record numbers: 10036966

Manufacturer summary

Original wording in English

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

NHTSA manufacturer communications ↗

Reported code forms

P0420

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

HondaP0420

CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD

NHTSA 10002097 · NHTSA 10003479 · NHTSA 10004795

Check vehicle applicability

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

Make	Model	Model year
Honda	FIT	2008
Honda	FIT	2007

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