P0128 on the 2012 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.
| A13-044 | 2016-12-20. Service bulletin. SERVICE BULLETIN -THE MIL COMES ON WITH DTC P0128 (COOLING SYSTEM MALFUNCTION) STORED. THE THERMOSTAT JIGGLE VALVE MAY INTERMITTENTLY STICK OPEN AND CAUSE THE PCM TO STORE DTC P0128. |
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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.