Service bulletins for the 2003 Honda Element
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.
172 on file from NHTSA, as of 2026-10-19.
About P0420 on the 2003 Honda Element: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: P0420 are shown. Show all
| 604 | 2005-04-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. UPDATE ECM/PCM FOR DIAGNOSTIC TROUBLE CODE P0420, CATALYST BELOW THRESHOLD. *NM |
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| 07012004 | 2005-04-28. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. S/M FIX DTC P0420 TROUBLESHOOTING. *EH |
| 03031 | 2003-10-22. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. MALFUNCTION INDICATOR LAMP COMES ON WITH DIAGNOSTIC TROUBLE CODE P0420 (CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD). *TT |
| 03031 | 2003-08-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. MALFUNCTION INDICATOR LAMP ON AND DIAGNOSTIC TROUBLE CODE P0420 (CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD) IS SET. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.