Service bulletins for the 2014 Honda Civic
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.
119 on file from NHTSA, as of 2026-10-19.
About P0420 on the 2014 Honda Civic: what the code means, and the bulletins and recalls about the same components.
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By component
By trouble code
Only bulletins with trouble code: P0420 are shown. Show all
| A22-045 | 2022-10-24. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Service Bulletin - Sensors on the vehicle may have misinterpreted the catalyst as deteriorated. Update the PGM-FI software if P0420 is present. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.