Service bulletins for the 2015 Honda CR-Z
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.
30 on file from NHTSA, as of 2026-10-19.
About P0420 on the 2015 Honda CR-Z: 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
| A22-040 | 2022-09-27. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - The MIL is on with P0420 (Catalyst System Efficiency Below Threshold). Sensors on the vehicle may misinterpret the catalyst as deteriorated or it may have deteriorated. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.