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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 247 (Engine Control System & Fuel - 4.8L, 5.3L, 6.0L, Or 6.2L - DTC P0010 To DTC P0230) >> DTC P0191 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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The FPCM does not detect a change in the fuel rail pressure (FRP) of at least 30 kPa (4.4 psi) over a predetermined variance of the engine speed.

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