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DTC P0451 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR RANGE/PERFORMANCE

DTC P0451 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR RANGE/PERFORMANCE

DTC DETECTING CONDITION:


• Two consecutive driving cycles with fault

• GENERAL DESCRIPTION


Important

After repair or replacement of faulty parts, conduct Clear Memory Mode and Inspection Mode .


WIRING DIAGRAM:


CHECK ANY OTHER DTC ON DISPLAY.

Is any other DTC displayed?

Yes

Inspect the relevant DTC using “List of Diagnostic Trouble Code (DTC)”.


No


CHECK FUEL FILLER CAP.

Turn ignition switch to OFF.

Open the fuel flap.

Is the fuel filler cap tightened securely?

Yes


No

Tighten fuel filler cap securely.


CHECK PRESSURE/VACUUM LINE.

Note

Check the following items.

• Disconnection, leakage and clogging of the vacuum hoses and pipes between fuel tank pressure sensor and fuel tank

• Disconnection, leakage and clogging of air ventilation hoses and pipes between fuel filler pipe and fuel tank


Is there a fault in pressure/vacuum line?

Yes

Repair or replace the hoses and pipes.


No

Replace the fuel tank pressure sensor.