ever since my long tubes went in, i cant get the CEL to stay off. i keep getting the same thing. i am running MIL eliminators on the rear 02 sensors. i brought the car in to a shop, and they changed the rear passanger side 02 sensor. now i am still getting this code! help me out its driving me nuts!! would i have to disconnect the battery after having the new 02 sensor installed?

 

Bank 1 Sensor 1 is the Passenger side upstream O2 Sensor. Are you running the O2 Sensor in the LT Headers? If you are did you possibly get something on the end of the Sensor when re installing it? Based on the code you need to replace that upstream sensor.


You DO NOT need to disconnect the battery after installing a new sensor but you do need to clear the codes with the scan tool/Tuner
Richard

 

changed the upper sensor, so far problem is solved...hopefully! they had changed out the wrong sensor. thanks for the help!

 

Hey guy,

Did you get your tune modified for your Long tube headers? When you install long tubes you move the 02 sensors further away from the engine, this in turn can affect the signal to the PCM because it is calculated by the spot it is in and the time it reads it.

Doing the sensor may help but whomever has done your tune have them adjust for the Long tube headers.

Thanks, Doug.

 

yes the car was re dynoed and re tuned after the headers went on, and the 02s are set as far back as they can be in the tune. thanks for the help doug!