P0504 on the 2005 Jeep Liberty
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.
| 1800906 | 2006-04-12. Service bulletin. ENHANCED TORQUE CONVERTER AND GLOW PLUG OPERATION OR BRAKE SWITCH DTC P0504. *TT |
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| 1803805 | 2006-01-06. Service bulletin. FLASH: ENGINE START AND DRIVE ABILITY AT ALTITUDE/BRAKE SWITCH DTC P0504. *AK |
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.