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2013
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Optima SX
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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Engine Control System Diagnosis (1 Of 3) - 2.0L
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DTC P0091: Fuel Pressure Regulator 1 Control Circuit Low
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General Information
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Signal Waveform & Data
Signal Waveform & Data
Fig 1: Screen Display - Fuel Pressure Data (Normal Idle State)
Courtesy of KIA MOTORS AMERICA, INC.
Normal idle state.
Fig 2: Screen Display - Fuel Pressure Data (FPR Circuit Shorts To Ground)
Courtesy of KIA MOTORS AMERICA, INC.
When FPR circuit shorts to ground.
Courtesy of KIA MOTORS AMERICA, INC.
Courtesy of KIA MOTORS AMERICA, INC.