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Home >> Chevrolet >> 2001 >> Prizm Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 1.8L >> Diagnostic Tests >> DTC P0451: Fuel Tank Pressure Sensor Performance >> Code Enable Criteria
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Code Enable Criteria

DTC will set when engine is idling, no vehicle speed is detected and EVAP pressure switching solenoid is off. DTC will also set when FTP sensor output voltage rapidly shifts from inside to outside a specified range.