P0420 on the 2001 Nissan Frontier
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| NTB02092 | 2002-10-31. Service bulletin. THIS BULLETIN PROVIDES INFORMATION ON VEHICLES EXHIBITING A MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P0420 CATALYST SET. *TT |
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| NTB02034 | 2002-05-22. Service bulletin. SUBJECT REGARDING MALFUNCTION INDICATOR LAMP ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE P0420. *JG |
2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.