Aaron_Hsu 發表：
台製品果然便宜耶...日製的接近破萬耶
找到一篇 DS 發表的文章, 關於 O2 Sensor...
There are 2 x lambda sensors in this exhaust system, both are the same, the most important one
is the primary or first O2 sensor, this is in the turbo down pipe and reads the AFR (Air fuel Ratio) and
reports back to the pcm, this is 100% needed for the car to run correctly and will throw a code if not
connected properly, it may have been damaged if it was banged heavily as they are sensitive.
If you open your bonnet and look at the right / back side of the engine cover, you will see a small grey
swing clip, this is where the primary O2 is connected, or should be, check this connector is actually
connected and locked in.
The rear O2 or secondary O2 only report emmissions and is not used for anything else, this does not
have to work and even if it is faulty it will only throw a MIL every 400+/- km.
