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Optima LX
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Repair and Diagnosis (Single Page)
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Engine Performance
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Engine Control System Diagnosis (1 Of 3) - 2.4L (Except HEV)
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DTC P0090: Fuel Pressure Regulator 1 Control Circuit/Open
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Specification
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Signal Waveform & Data
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Signal Waveform & Data
Fig 1: Signal Waveform Of Fuel Pressure Regulator Valve (FPR) Control Valve
Courtesy of KIA MOTORS AMERICA, INC.
Fuel Pressure Regulator Valve (FPR) control value during increase and decrease of RPM.
Fig 2: Fuel Pressure Set Point & Fuel Pressure Values
Courtesy of KIA MOTORS AMERICA, INC.
Fuel Pressure Set Point and Fuel Pressure Values when the Circuit Opens