Subject regarding diagnostic trouble code P9999 probably being diagnostic trouble code P0420
Honda technical service bulletin 011001 for 1999-2000 Honda Civic.
- Bulletin number
- 011001
- Component
- Electrical system: ignition: module
- Summary
- Subject regarding diagnostic trouble code p9999 probably being diagnostic trouble code p0420. Slc
Owners of these vehicles have filed 156 complaints in the electrical category.
Vehicles covered
- Honda Civic 1999-2000 19992000
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