Okay, I did do a search, and found the codes but not really the meanings. Advance Auto read the codes, cleared them but they came back within a day. I have the B16 Civic Si, 1999. Only has a header, cat back exhaust, short ram intake. The first code, P1457-Unable to pull vacuum in tank. Would this pertain to the gas cap? I have tightened it many times and am considering a new one. The 2nd code is a P0133-O2 slow response, bank 1, sensor 1. Pretty self explanitory, but what is "bank 1" and "sensor 1"? Is this the sensor before the cat? I think it is 4 wire. Is the slow response meaning it is about to fail completely, because my gas mileage is suffering pretty bad. Just had the engine rebuilt because rings were bad so maybe the O2 is fouled up? Any help would be great, as lack of funds leaves a visit to the shop out of the question. Baby formula and diapers are priority, sleep is only a limited luxury.Thx a million!
