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Suzuki
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2002
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XL-7 Plus
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics
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Diagnostic Tests
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DTC P0451: EVAP System Pressure Sensor - Range/Performance
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Possible Causes
Possible Causes
Possible causes are:
Plugged vent hole, or pressure passage of Fuel Tank Pressure (FTP) sensor.
FTP sensor malfunction.
High resistance in FTP sensor circuit.
ECM malfunction.