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P1456 Diagnostic Trouble Code Discussion for December 2012

EVAP System Very Small Leak Detected


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Trouble Ticket Help Requests for DTC P1456
Help Request Posted
2002 Nissan Xterra SE 3.3L MIL Lamp on VIN: 5N1ED28YX2
P1456: EVAP System Very Small Leak Detected. I have code p1456 small evap leak. I have smoked this vehicle and have seen no leaks. I replaced the close valve on the canister as I seen some of these leak.Also replaced the gas cap. I can see the pressure sensor change the sensor with smoke applied. I'm kin...
December 17, 2012
2003 Honda Civic LX 1.7L MIL Lamp on VIN: 1HGES16593
P1456: EVAP System Leak Detected (Fuel Tank Area). I am trying to find out why its setting this code when the system holds vacuum perfectly.The FTP sensor shows an increase in pressure and voltage as fuel tank is drawn into vacuum.It shows .30psi and 3.0 volts under vacuum.Its going the wrong way according to ...
December 18, 2012
2003 Honda Civic LX 1.7L MIL Lamp on VIN: 1HGES16593
P1456: EVAP System Leak Detected (Fuel Tank Area). I am trying to find out why its setting this code when the system holds vacuum perfectly.The FTP sensor shows an increase in pressure and voltage as fuel tank is drawn into vacuum.It shows .30psi and 3.0 volts under vacuum.Its going the wrong way according to ...
December 19, 2012
2002 Nissan Xterra SE 3.3L MIL Lamp on VIN: 5N1ED28YX2
P1456: EVAP System Very Small Leak Detected. I have code p1456 small evap leak. I have smoked this vehicle and have seen no leaks. I replaced the close valve on the canister as I seen some of these leak.Also replaced the gas cap. I can see the pressure sensor change the sensor with smoke applied. I'm kin...
December 17, 2012
2003 Honda Civic LX 1.7L MIL Lamp on VIN: 1HGES16593
P1456: EVAP System Leak Detected (Fuel Tank Area). I am trying to find out why its setting this code when the system holds vacuum perfectly.The FTP sensor shows an increase in pressure and voltage as fuel tank is drawn into vacuum.It shows .30psi and 3.0 volts under vacuum.Its going the wrong way according to ...
December 18, 2012
2003 Honda Civic LX 1.7L MIL Lamp on VIN: 1HGES16593
P1456: EVAP System Leak Detected (Fuel Tank Area). I am trying to find out why its setting this code when the system holds vacuum perfectly.The FTP sensor shows an increase in pressure and voltage as fuel tank is drawn into vacuum.It shows .30psi and 3.0 volts under vacuum.Its going the wrong way according to ...
December 19, 2012