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Home >> Hummer >> 2009 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 6.2L - DTC P0010 To DTC P0232 >> DTC P0191 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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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