Narrowband Voltage Rnage?

[cpolaris502]

I have an LC-1 wired to my EGR of the PCM. I also have the innovate digital air fuel gauge. When I first hooked everything up, it all worked great and read equal. Now a few weeks later, I have changed nothing, and my scanner is reading almost 1 whole point higher than my gauge. I recalibrated the sensor and checked out the ground but that didnt help.

I also have the narrowband output fromt he LC1 connected and I noticed that it is also reading a higher voltage than my stock Bank 2 sensor. This is weird.

Any thoughts?
Narrowband offset.jpg

[cpolaris502]

I should add that both the scanner and the gauge are being fed by the same Analog output 2 wire from the wideband controller, thus making it more confusing to me. I checked the custom pid and the values didn't change in that. The hard part is I don't know what to trust. It worked perfect for a few weeks and then started getting off.

Could logging too many sensors and pids cause this to be skewed? My table is pretty full.

[jimmyblue]

The LC-1 is known for having ground offset accuracy
issues (as do most widebands, but the ground feed and
what shares it, is a big variable). Heater load and chassis
sheet metal load are variable with what's going on with
the weather (A/C, blower fan, etc.). The agreement of
gauge (kinda self contained) with remotely sensed output
voltage difference (bent by ground I*R offset) is suspect
for any meter.

[EagleMark]

I also have the narrowband output fromt he LC1 connected and I noticed that it is also reading a higher voltage than my stock Bank 2 sensor. This is weird.

Any thoughts?

Weld in a new bung for the LC-1, don't use the simulated NB.

I should add that both the scanner and the gauge are being fed by the same Analog output 2 wire from the wideband controller, thus making it more confusing to me.

Innovate has said not to run one AD output to two sources.