P0856 on the 2005 Pontiac Grand Prix
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.
| 050525009 | 2005-11-30. Service bulletin. BRAKE SYSTEM LIGHT ON, ANTILOCK BRAKE SYSTEM (ABS) LIGHT ON, TRACTION CONTROL LIGHT ON, SERVICE BRAKE/ABS/TRACTION/STABILITY MESSAGE DISPLAYED, DTCS C0241, C0550, P0856 SET. *TT |
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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.