Questions & Answers for: po455 check engine light

...tell me what they mean? Thanks!! PO456,PO455,PO442 Check Engine Light Is your gas cap tight? check it, these codes indicate a large leak in the fuel evaporative emission recovery system at the gas ...

...po455 code on my 2004 grand prix i have replaced gas cap, I had a check engine light on for my gas cap. I fueled up and sometimes it would say "check gas cap" So i just plugged it in under the ...

check engine light comes on 2001 engine light comes on and the code reader says po455 large leak "po455 large leak" means that you are not maintaining positive pressure in your fuel system. Have a ...

...po455 evap diagnostic trouble code . check engine light on po442 is evap emission control system leak (small) 1 of the lines for emissions is leaking. po455 is-- emission control system leak (large). ...

PO455 My check engine light came on. ( Troubleshooting code is PO455) Which means control system leak detected - Large leak ( problem cause lists Faulty fuel cap, Canister faulty, Purge valve solenoid

Check engine light came on and i checked the code and got PO455. Checked the gas came to make sure of a good seal and it was fine. Where else should i look? PO455-Evap Control System Leak (No Purge ...

i got code po134 and po135 and po442 and po455 what r these www.engine-light-help.com/generic-check-engine-light-codes.html

check engine light came on and the code showed po455 check engine light and code po455 its a evap code could be from a bad gas cap to a cracked vapor line or a bad sensor

...PO455 came on with check engine light, local auto parts place said that it is the fuel cap it probably was not closed correctly. Tank is 1/8 full, meaning the gas cap was opened five days ago. What ...

...po455 what causes this ? EVAP circuit malfunction, could possibly be the gas cap loose. Check all hoses and fittings from evap back to fuel tank. On 1post in pacifica world the prob was solved by ...