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P0191 Diagnostic Trouble Code Discussion for September 2011

Fuel Rail Pressure Sensor Performance

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Trouble Ticket Help Requests for DTC P0191
Help Request Posted
2005 Ford F-250 Super Duty XL 6.8L Cuts out VIN: 1FTSX21Y05
P0191: Fuel rail pressure range performance. First post, i need help from ford techs. Vehicle lacks power on accelaration. Pressures at 38 psi and drops down to 5 psi on accelaration. Checked fuel pressure with a inline gauge. Command fuel pressure duty cycle on snap on verus and pressure increases at ti...
September 27, 2011