Update ECM/PCM for diagnostic trouble code P0420, catalyst below threshold
Honda technical service bulletin 604 for 2003 Honda Accord and 2003 Honda Element.
- Bulletin number
- 604
- Component
- Engine and engine cooling: engine
- Summary
- Update ECM/PCM for diagnostic trouble code p0420, catalyst below threshold. Nm
Owners of these vehicles have filed 156 complaints in the engine category.
Vehicles covered
- Honda Accord 2003 2003
- Honda Element 2003 2003
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