I had my CEL on and I checked what it was throwing off and it was a 27. It says that it a Sub-Oxygen Sensor signal. Has anyone had this, and what do I actually need to replace or check? Thanks.
Error code 27 - 6G Celicas Forums
o2 sensor...umm prolly the one under the car cuz i think our cars have two
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it's the sub sensor on the cat the bottom one towards the ground you'll see it when you pop the hoodie
Thanks for the info. I will check it out.
One more question......would this be the upstream or downstrem?