I need help with my wide band

[joecar]

Which wideband do you have...?

Which V2 firmware version do you have...?

When the serial AFR goes to 10/freezes, what does the analog AFR do, and what is the vehicle doing...?

[isak81]

I have the PLX SM-AFR GEN II. I already added a serial comm connection to it because the AD inputs were not accurate.

I just did a search on the firmware and couldn't find were to check it but I did update it to 2.07.22

I don't have a guage on the analog output. The truck doesn't react at all, just runs like normal.

Now I'll go try it again maybe the new firmware will help.

[isak81]

OK. It's not the firmware.
If you look at the link in post 7, you will see that the ground and TX are taken from the TX plug.
The gauge plugs into the TX socket. My gauge is in for warranty because it didn't work.
Could the module be sensing for the presence of the gauge and stops transmitting when its
not plugged in? I checked the analog outs with my DVM and the voltage hovers 2-2.5 which is near stoich.