andyjl

When does one know when to get new o2 sensors? I know from previous years when I used to frequent here more often that one of the things to do for better gas mileage might be having to change the o2 sensor.

Where could i get that done? Just at the local mechanic or somewhere like pep boys, or the Dealer?

How do I know when it should be time to change it?

sayfulhaqq

iTrader: (3)

If the o2 sensor is faulty, the check engine light will come on. If you run the codes and get p0140, po141 (02 sensors , bank 1 , sensor 2 and sensor 1), then you should replace the o2 sensors. If your check engine light is not on,then you really do not need to change.

02CL-TypeS

not to thread jack, but I got one of those codes after I seafoamed my car. I just had autozone erase or resest the code(whatever they do). Would the code pop up again if I still have a problem or since I cleared it is there no way of telling if it really is faulty or was just messed up while the seafoam was cleanin everything?

LukeaTron

If it's really a problem, it will come up again. If it doesn't, I wouldn't be too concerned.

jproy

It is very common to throw some misfire codes and or O2 codes during a seafoam. I did it yesterday on a friends car.