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Honda
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2000
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Civic Si 2Dr Coupe L4-1595cc 1.6L DOHC (VTEC) MFI
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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Manufacturer Code Charts
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Engine Control System
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DTC 91
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Range/Performance Problem
Range/Performance Problem
The scan tool indicates Diagnostic Trouble Code (DTC) P0451:
The Fuel Tank Pressure sensor circuit range/performance problem.