I posted this in the tech/misc section a few weeks ago but did not get any replies and I still have the problem. I thought that this would be a better place to post it. Any ideas would be greatly appreciated.

Original post:
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.

Update:
I switched to a closed loop system by adding another bung in the downpipe and putting the oem oxygen sensor back in. I drove around like this for over a week without getting the code. I thought that I had solved the problem, but all of a sudden, the code came back. I am out of ideas, please help. Thanks!

 

Are you running the latest version of hondata's smanager ?
Do you have the check box labeled closed loop operation un checked ?
Are you uploading your changes ?

 

Yes, I am running the latest version of smanager.

Now that I am running closed loop, I have the box checked and the 02 heater enabled. When I was running open loop, I used the opposite settings.

Yes, I am uploading my changes.

Thanks for the help. let me know if you have any other ideas.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TB123 &raquo;</TD></TR><TR><TD CLASS="quote">Yes, I am running the latest version of smanager.
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I just checked and I guess that I don't have the latest version. I have 1.3.4.0. I could try switching to 1.3.8.0.