P1456 on the 2000 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.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| SB-99-075 | 2013-11-06. Service bulletin. HONDA: TROUBLESHOOTING OF DIAGNOSTIC TROUBLE CODES (DTC) P1456 AND P1457. DEALERS ARE TO RUN EVAP FUNCTION TEST TO FIND IF THERE IS A LEAK SO THE VEHICLE CAN BE REPAIRED. *KB |
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| 010402 | 2002-11-13. Service bulletin. INFORMATION ON TESTING FOR INTERAL LEAKS WITH DIAGNOSTIC TROUBLE CODE P1456 OR P1457. *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.