P0139 on the 2017 Honda Accord
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.
| A25-040 | 2025-07-02. Service bulletin. Service Bulletin - The MIL comes on with DTC P0139 (secondary heated oxygen sensor slow response) due to the ECM/PCM misinterpreting the secondary heated oxygen sensor output and sets DTC P0139. |
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1 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.