I am getting CEL code #1 (oxygen content or oxygen sensor #1) in my 1995 turbo gsr. The CEL only comes on after I have been driving for a while and then goes away when the engine has been turned off and cooled. I am unsure why I am getting this code. I have the 02 sensor disabled in the Hondata software and a PLX wideband installed. I am running an open loop system. How can the ecu be throwing an oxygen sensor code if the oxygen sensor is not telling it anything? By the way, the ECU is a 0BD-I P72 with Hondata S300. Thanks for the help.

 

Does anyone have any ideas?