P0138 on the 2001 Honda Civic
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.
| 010101 | 2001-10-31. Service bulletin. SUBJECT ON REGARDING:S/M FIX: DTC P0138 |
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| 010201 | 2001-07-06. Service bulletin. BRIEF INFORMATION REGARDING DIAGNOSTIC TROUBLE CODE P0138 (SECONDARY HO2S (SENSOR 2) CIRCUIT HIGH VOLTAGE). *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.