O2 Sensor, Code 27?
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O2 Sensor, Code 27?
Alright, I have a 92 SC300 and my check engine light has been on. I did the self test and came out with code 27 and code 71. I already fixed code 71 because I had some serious carb build up in my EGR. Now code 27 I thought was the sub O2 sensor but I am not sure which one is the sub sensor. I am only finding 2 O2 sensors on the car right on the Headers so which one is the main sensor and which is the sub sensor. Any help would be greatly appreciated, thank you.
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Ok, not being rude but I guess no one can help me out. I have been on several other forums as well and no one responds. I guess I will just have to figure it out the good old fashion trial-and-error way. If you do know somethin, please let me know, thanks.
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I think I have narrowed down the problem....
I changed ecu's and didn't get the light. I too only have 2 O2 sensors and don't have the 'secondary sensor' like some cars. I do have a plug inside the car for one but there was never one hooked up from the factory. I too got code 27 (secondary O2) and changing the O2 sensors didn't help. I changed ECU's and it seems to be okay now. I want to give thanks to slappy96 for hooking me up with a computer.
Thanks,
I changed ecu's and didn't get the light. I too only have 2 O2 sensors and don't have the 'secondary sensor' like some cars. I do have a plug inside the car for one but there was never one hooked up from the factory. I too got code 27 (secondary O2) and changing the O2 sensors didn't help. I changed ECU's and it seems to be okay now. I want to give thanks to slappy96 for hooking me up with a computer.
Thanks,
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