P0191 on the 2007 Chevrolet Express
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.
| TB-09-06-04-022 | 2009-08-04. Service bulletin. GENERAL MOTORS: MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED, INTERMITTENT DTC P0191, SLOW FUEL RAIL PRESSURE (FRP) DECAY, WIRING HARNESS CONNECTIONS, VOLTAGE FLUCTUATIONS/INTERRUPTIONS (FOLLOW CORRECTION INFORMATION BELOW). *PE UPDATED 11/23/09. *PE |
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| PIP-4430 | 2008-11-26. Service bulletin. GMC: FUEL RAIL PRESSURE SENSOR PERFORMANCE DTC P0191. MAY SET DUE TO ACTUAL FUEL RAIL PRESSURE NOT DROPPING QUICKLY ENOUGH WHEN THE ENGINE IS SHUT OFF. *PE |
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.