service engine soon light, P0136 code

crimm99

New Member
Feb 28, 2004
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Clinton, IA
My check engine light came on yesterday. Error code P0136 came up on my programmer. I checked the code in my book and it says... Oxy Sensor Circuit(bank1, Sensor2). Is anyone familiar with this error code, I need to know what sensor I need to replace, thanks.

My car is a 99 GT, xpipe all the cats are removed, It was like that when I got it. Ive had it over a year now and this is the first time the light has come on. I cleared out the code and it came right back on.
 
The O2 sensor that it is pointing to, is the drivers side sensor, after the cat. Considering you dont have cats, you must have MIL eliminators for your check engine light to have come on after a year of driving the car. Therefore, in my opinion, your MIL eliminator has failed.