Closed Loop Fault
11-20-2003, 01:19 PM
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Closed Loop Fault Hi guy I am getting a strange error in EFIlive 6. On the main graphical dash I have 2 fuelsystem monitor icons. Shortly after starting the car I have FuelSys-A go into closed loop (and turn green). However fuelsys-b stays red and says CL-fault (which i assume means closed loop fault). The strange thing is that I get no check engine light for this. Had I not decided to run diags on it I would have never seen it. I imagine this has to do with the O2 sensors and that I am talking about bank 2 sensor 1. Can anyone explain what a CL-fault is and how I can go about troubleshooting it. I show alternating voltage on the O2 sensors that looks normal. I have been getting hearter circuit errors on the rear banks. (these actually set a code).
I appreciate the help!
Mike
I appreciate the help!
Mike
