Over 1M Posts • 84K Topics • 9K Authors

Error code 27 - 6G Celicas Forums

Topic #17165 5 posts Started by BryonC17
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.
o2 sensor...umm prolly the one under the car cuz i think our cars have two

2011 Spice Orange Mini Cooper2011 Alpine White BMW E92 M3gone but not forgotten2008 Space Grey BMW Z4 ///M2009 Black Honda Civic LX Coupe2006 Magnetic Black Nissan 350Z2007 Crimson Red BMW 335i Coupe
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?