P0420 on the 1996 Ford Explorer
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.
| 00264 | 2001-03-13. Service bulletin. SOME VEHICLES MAY EXHIBIT A MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION ALONG WITH A P0420 DIAGNOSTIC TROUBLE CODE (DTC) STORED IN CONTINUOUS MEMORY WITH NO DRIVEABILITY CONCERNS. *TT |
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| 00234 | 2001-03-01. Service bulletin. SOME VEHICLES MAY EXHIBIT A MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION ALONG WITH A P0420 DIAGNOSTIC TROUBLE CODE (DTC) STORED IN CONTINUOUS MEMORY WITH NO DRIVEABILITY CONCERNS. *TT |
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.