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LC2 wideband not working. Help!

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Vegas Smith

20+ Year Contributor
5,193
3,153
Dec 2, 2002
Houston, Texas
OK, bought a brand new LC2 wideband with gauge a few months ago. Everything worked fine. Lc1wb showed up on link and changed/worked etc as expected. A few weeks later I realized the gauge didn't work and I notice the gauge ground came loose. I didn't care about the gauge being hooked up so I just removed the gauge and moved on. Now, the lc1wb only reads 20.7 at all times and the gauge reads 10.7-10.8 at idle (open loop). The lc1wb values do not change even if I drive a round the block for a few minutes. I have tried a brand new sensor as well with no change. I have re-calibrated multiple times. Any ideas? Here is a recent log:
 

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I would go through the installation again, double check all of your wires, ,make sure you have a good ground. If that doesn't fix the issue you might have a faulty unit. If your wiring checks out and you have a good ground and have calibrated it correctly theres no reason it shouldn't work. Doesn't the box flash errors codes if something is wrong? Look through the instructions.
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No error codes whatsoever. I did exactly how Jafro did in his video too, except his reads 22.4 at calibration and mine read something like 7.5
 
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No error codes whatsoever. I did exactly how Jafor did in his video too, except his reads 22.4 at calibration and mine read something like 7.5
There is an issue right there. When calibrating that unit, the sensor should be in the air (not in the exhaust) so when its done calibrating it should read its max lean value of 22.4. If yours is reading 7.5 in clean air it's way off
 
There is an issue right there. When calibrating that unit, the sensor should be in the air (not in the exhaust) so when its done calibrating it should read its max lean value of 22.4. If yours is reading 7.5 in clean air it's way off
Yeah i just don't understand what would cause it. It's getting 12.4 volts.
 
Is ecm link seeing what's on the gauge? I mean does it stay static on the gauge and In ecmlink
 
The reality is if you have 12v and a good ground and the unit is not throwing a code. You might have a bad controller.
 
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