AFR gauge

[Frogeye]

I have an AIM Digital Wideband Air / Fuel Gauge (heated Bosch sensor) which lost power recently. When I restoring power it "booted up" but didn't read. I assumed it had fouled the sensor but after replacing it still won't read. Any thoughts?

 

[Dayle Frame]

I have an AIM Digital Wideband Air / Fuel Gauge (heated Bosch sensor) which lost power recently. When I restoring power it "booted up" but didn't read. I assumed it had fouled the sensor but after replacing it still won't read. Any thoughts?

These things are pretty straight forward. It sounds like something simple. Did you check and clean the ground? Is the power kosher?

Dayle