CEL-Fault PO456
05-18-2016, 05:24 PM
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CEL-Fault PO456
Have had a sporadic check engine light coming on and then going off and then came back again a week later. Brought my car to the dealer and was diagnosed with a PO456 fault code indicating emission control system leak detected.
Checked fuel filter cap and N80 valve and both checked OK, performed smog check and found Pressure Sensor G400 leaking. Found and performed Technical Service Bulletin 2035073/12. Replaced the NVLD pressure sensor and filter and all is now good.
Had not seen any reports on this issue before, curious if it is widespread.
Checked fuel filter cap and N80 valve and both checked OK, performed smog check and found Pressure Sensor G400 leaking. Found and performed Technical Service Bulletin 2035073/12. Replaced the NVLD pressure sensor and filter and all is now good.
Had not seen any reports on this issue before, curious if it is widespread.
Last edited by Allraodgone; 05-18-2016 at 05:27 PM.
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