The MIL is on and DTC P0420 (catalyst system efficiency below threshold) is set
Honda technical service bulletin A18-027 for 2015-2016 Honda Fit.
- Bulletin number
- A18-027
- Component
- Fuel system, gasoline: fuel injection system
- Summary
- Service bulletin - The MIL is on and DTC P0420 (catalyst system efficiency below threshold) is set. Faulty fuel injectors in one or more cylinders may be affecting combustion and causing a false DTC P0420.
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